1. Mullah Muhammed bin Yaqoob Kulaini, regarded as being among the most prominent Shi’ite scholars of Hadith, states:
وان الشيخين فارقا الدنيا ولم يتوبا ولم يتذكرا ما صنعا بامير المؤمنين عليه السلام فعليهما لعنة الله والملائكة والناس اجمعين (فروع كافي كتاب الروضة ص115)
‘Abu Bakr and Umar did not repent before they parted from the world. In fact, they did not even mention what they had done to Ali. So may Allah, His angels and all of mankind curse them.’ 
2. Mullah Baqir writes:
واعتقاد ما در برات آنست کہ بیزاری جوئند ازبت ہائے چہار گانہ یعنی ابو بکر وعمر وعثمان ومعاویہ وزنان چہار گانہ یعنی عائشہ وحفصہ وہند وام الحکم واز جمیع اشیاع واتباع ایشاں وآنک ایشاں بدترین خلق خدا یند وآنک تمام نمے شود اقرار بخدا و رسول وائمہ مگر بہ بیزاری ازدشمنان ایشاں (حق الیقین ج۲ ص۵۱۹)
‘Regarding the doctrine of Tabarri  we believe that we should seek disassociation from four idols, namely, Abu Bakr, Umar, Uthmaan and Mu’awiyah; and from four women namely, Ayesha, Hafsa, Hind and Ummul Hakam, along with all their associates and followers. These are the worst creation of Allah. It is not possible to believe in Allah, His Messenger and the Imams without disassociating oneself from their enemies.’ 
3. The first to take the oath of allegiance at the hands of Abu Bakr was Iblees (Kitaabul Raudah pg. 159/160)
4. Mullah Baqir further writes:
‘One should say after each prayer: O Allah! Curse Abu Bakr, Umar, Uthmaan, Mu’awiyah, Ayesha, Hafsa, Hind and Ummul Hakam.’ 
5. Mullah Baqir Majlisi is a renowned personality in Shi’ite circles; whenever he mentioned the name of Sayyidina Umar (Radiyallahu Anhu) in his books he would write: “May Umar be cursed.”
6. Shi’ites believe that the most auspicious day of the year is the day on which Sayyidina Umar (Radiyallahu Anhu) was murdered by Abu Lu’lu’ the fire worshipper. (Nahjul Balaagha)
7. They believe that the mercy of Allah Ta’ala descends on the murderer of Hazrat Umar (Radiyallahu Anhu).
8. The day when Sayyidina Umar (Radiyallahu Anhu) was killed is such an occasion of rejoicing that Allah Ta’ala declared the permissibility of sinning for three consecutive days. That is, every year on the anniversary of the assassination of Sayyidina Umar (Radiyallahu Anhu), for three days Shi’ites are permitted to fornicate, consume alcohol, steal and commit all sorts of sins and crimes with complete enjoyment since sins are not recorded during these three days. (Nahjul Balaagha)
9. Abu Moosa al-Ashari and Amr ibn al-Aas sold their souls to the devil. (Nahjul Balaagha)
10. Khomeini said: “When we establish our hold over Makkah and Madinah and I enter as conqueror, the first thing I shall do, is to dig out two idols, Abu Bakr and Umar, lying by the side of the Prophet’s grave.” (Khomeini and Islam pg. 8)
11. Any murder committed in Islam, any unlawful wealth earned by anyone as well as any adultery committed until the appearance of our Imaam – the sin of all these is on the necks of Abu Bakr (Radiyallahu Anhu) and Umar (Radiyallahu Anhu). (Rijal Kashi, pg. 135)
12. Khomeni writes about Abu Bakr and Umar (Radiyallahu Anhuma): ‘Those people who, in their greed to rule, attached themselves to the Deen of the Prophet (Sallallahu Alayhi Wasallam) and formed their own cliques, could not possibly refrain from their actions on the basis of Quranic advice. They had to materialise their aims at any cost. (Kashful Asraar: 114)
He also writes: ‘Those who had no affiliation with the Quran and Islam except through their desire for the world and power. They had made the Quran a vehicle to promote their agenda.’ (Kashful Asraar: 114)
13. Khomeni writes about Uthmaan (Radiyallahu Anhu):
ما خدائے را پرستش مے کنیم ومے شناسیم کہ کارہائش براساس خرد پائیدار وبخلاف گفتہ ہائے عقل ہیچ کارے نہ کند نہ آں خدائے کہ بنائے مرتفع از خدا پرستی وعدالت ودینداری بنا کند وخود بخرابی آں بکوشد ویزید ومعاویہ وعثمان وازیں قبیل چپاولچی ہائے دیگر را بمردم امارت دہد (کشف الاسرار ص107)
‘We worship and recognise only that God Whose Actions are based on concrete rationalism and Who does not rule against that rationalism. We do not worship a god who creates a building for Divine worship and justice and then strives to destroy that very building himself by giving authority to rascals like Yazid, Mu’awiyah and Uthman.” 
15. Mullah Muhammed bin Yaqoob Kulaini, the most prominent Shi’ite scholar of Hadith, quotes Imam Baqir as saying:
كان الناس أهل ردة بعد النبي صلى الله عليه وسلم الا ثلاثة (فقلت ومن الثلاثة فقال) المقدار بن الاسود وابو ذر الغفاري وسلمان الفارسي رحمة الله عليهم وبركاته
‘People became apostates after the death of the Prophet Sallallahu Alayhi Wasallam, except for three people: Miqdad ibn Aswad, Abu Dharr Ghifari and Salmaan Farsi.’
The Beliefs of the Muslims regarding the Sahaabah
In every era of human history, for the reformation of mankind Allah Ta’ala sent down two sources of guidance. The first source was the revelation of Allah Ta’ala (i.e. the heavenly books and scriptures) and the second was the men of Allah Ta’ala (the Ambiya). The Ambiya (Alayhimus Salaam) were sent down in order to practically demonstrate before the people the correct application of the laws of Shari’ah through their noble example. It was the divine system of Allah Ta’ala that He selected companions from among the Ummah of every Nabi in order to support them in accomplishing the mission of Nubuwwat. From among the ummah of Hazrat Nabi-e-Kareem (Sallallahu Alayhi Wasallam), those who were divinely chosen by Allah Ta’ala were none other than the illustrious Sahaabah of Rasulullah (Sallallahu Alayhi Wasallam).
Rasulullah (Sallallahu Alayhi Wasallam) himself highlighted this, as reported in the following Hadith
عن عويم بن ساعدة رضي الله عنه أن النبي صلى الله عليه وسلم قال : إن الله اختارني واختار لي أصحابا (مجمع الزوائد 9/738)
Hazrat Uwaimir bin Saaidah (Radiyallahu Anhu) reports that Rasulullah (Sallallahu Alayhi Wasallam) said: “Allah Ta’ala chose me to be the final messenger and chose for me my Sahaabah (as my supporters).”
It is reported in the Mubaarak Hadith that Allah Ta’ala looked at the hearts of the creation. He found the heart of Muhammad (Sallallahu Alaihi Wasallam) to be the best of hearts. Therefore he selected him for Himself and sent him with His message. Thereafter Allah Ta’ala looked at the hearts of the rest of creation after selecting Muhammad (Sallallahu Alaihi Wasallam). He then found the hearts of the companions (Sahaabah) of Rasulullah (Sallallahu Alaihi Wasallam) to be the best hearts (from the entire creation after the Ambiya). Hence, He divinely selected them as the supporters of His Nabi who will fight against the kuffaar for the course of His deen.” 
 Furu’ul Kafi: Kitabul Raudah: 115
 The doctrine of Tabarri means to have no association with the enemies of Allah.
 Haqqul Yaqeen: 2:519
 ‘Aynul Hayat: 599
 Ibid: 107
 مسند أحمد 6/84
Their sacrifices and love for Rasulullah (Sallallahu Alayhi Wasallam)
The Sahaabah spared no effort in supporting Rasulullah (Sallallahu Alayhi Wasallam) in fulfilling his mission and they strove tirelessly to establish the structure of Islam. They preserved the Qur’an, Sunnah and every minute detail of the Mubaarak life of Rasulullah (Sallallahu Alayhi Wasallam) in its original form and conveyed it to the Ummah. After the demise of Rasulullah (Sallallahu Alayhi Wasallam), they travelled far and wide propagating the Deen of Islam and the Sunnah of Rasulullah (Sallallahu Alayhi Wasallam) to the four corners of the globe. The submission and obedience they displayed before the commands of Allah and His Rasool (Sallallahu Alayhi Wasallam) were unparalleled.
When Urwah bin Mas’ood came as an envoy of the Quraish (prior to embracing Islam), he witnessed the reverence and respect the Sahaabah showed Rasulullah (Sallallahu Alayhi Wasallam). He was amazed by this and upon returning to the Quraish he presented the following report: “I have been present at the courts of great kings and monarchs as an envoy. I have met the Emperors of Persia, Rome and Abyssinia. Nowhere have I witnessed the subjects of any king or leader show him such respect as I had seen the companions of Muhammad (Sallallahu Alayhi Wasallam) respect him. When he spits, they do not allow his blessed saliva to fall on the ground. They immediately take it and anoint it to their faces and bodies. When he issues an order, every person among them hastens to carry it out. When he makes wudhu, they race and compete with one another to acquire some of the used water which fall from his limbs, in such a way that an observer would think they are going to fight over the water. When he speaks, everybody is silent and listens attentively to what he says. None of them raises his eyes and looks at him in his face, out of respect.” 
On account of the true love they possessed for Rasulullah (Sallallahu Alayhi Wasallam) and the unflinching loyalty they exhibited before his commandments, they became the greatest of this ummah and the most beloved in the sight of Allah Ta’ala. Allah Ta’ala declared in the Holy Qur’an:
رَضِىَ اللَّـهُ عَنهُم وَرَضوا عَنهُ ﴿التوبة: ١٠٠﴾
Allah Ta’ala is pleased with them, and they are pleased with Allah Ta’ala.
Allah Ta’ala praising the Sahaabah in the Qur’an
At the battle of Badr
وَلَقَد نَصَرَكُمُ اللَّـهُ بِبَدرٍ وَأَنتُم أَذِلَّةٌ ۖ فَاتَّقُوا اللَّـهَ لَعَلَّكُم تَشكُرونَ ﴿١٢٣﴾ إِذ تَقولُ لِلمُؤمِنينَ أَلَن يَكفِيَكُم أَن يُمِدَّكُم رَبُّكُم بِثَلـٰثَةِ ءالـٰفٍ مِنَ المَلـٰئِكَةِ مُنزَلينَ ﴿١٢٤﴾ بَلىٰ ۚ إِن تَصبِروا وَتَتَّقوا وَيَأتوكُم مِن فَورِهِم هـٰذا يُمدِدكُم رَبُّكُم بِخَمسَةِ ءالـٰفٍ مِنَ المَلـٰئِكَةِ مُسَوِّمينَ ﴿١٢٥﴾ وَما جَعَلَهُ اللَّـهُ إِلّا بُشرىٰ لَكُم وَلِتَطمَئِنَّ قُلوبُكُم بِهِ ۗ وَمَا النَّصرُ إِلّا مِن عِندِ اللَّـهِ العَزيزِ الحَكيمِ ﴿ آل عمرآن: ١٢٦﴾
Certainly Allah Ta’ala divinely assisted you (O Sahaabah) at Badr, when you were a small army; then fear Allah; so that you may be grateful. Remember the time when you (O Muhammad Sallallahu Alayhi Wasallam) said to the believers (Sahaabah): “Will it not suffice you that Allah Ta’ala sends down three thousand angels to aid you in battle?”Certainly, if you remain firm and adopt taqwa, even if the enemy should rush towards you, your Lord would help you with (another) five thousand angels. Allah made it but a message of hope for you and an assurance to keep your hearts at ease. There is no help except from Allah The Exalted, The Wise.
At the battle of Uhud
وَلا تَحسَبَنَّ الَّذينَ قُتِلوا فى سَبيلِ اللَّـهِ أَموٰتًا ۚ بَل أَحياءٌ عِندَ رَبِّهِم يُرزَقونَ ﴿١٦٩﴾ فَرِحينَ بِما ءاتىٰهُمُ اللَّـهُ مِن فَضلِهِ وَيَستَبشِرونَ بِالَّذينَ لَم يَلحَقوا بِهِم مِن خَلفِهِم أَلّا خَوفٌ عَلَيهِم وَلا هُم يَحزَنونَ ﴿١٧٠﴾ يَستَبشِرونَ بِنِعمَةٍ مِنَ اللَّـهِ وَفَضلٍ وَأَنَّ اللَّـهَ لا يُضيعُ أَجرَ المُؤمِنينَ ﴿١٧١﴾ الَّذينَ استَجابوا لِلَّـهِ وَالرَّسولِ مِن بَعدِ ما أَصابَهُمُ القَرحُ ۚلِلَّذينَ أَحسَنوا مِنهُم وَاتَّقَوا أَجرٌ عَظيمٌ ﴿ آل عمرآن: ١٧٢﴾
And never think that those who have been slain in the path of Allah Ta’ala (from the Sahaabah at Uhud) are dead. Rather, they are alive and receiving sustenance by their Lord. They are rejoicing (in the hereafter) in what Allah Ta’ala has bestowed upon them of His bounty, and they receive glad tidings about those (to be martyred) after them who have not yet joined them – that there will be no fear upon them in the hereafter and nor will they grieve. They receive glad tidings of the favours from Allah Ta’ala and the bounties and Allah Ta’ala does not allow the reward of the believers to be lost .Those Sahaabah who responded to Allah and the Messenger after being inflicted with injury (at the battle of Uhud), for those among them who did good and feared Allah is a great reward.
At the pledge of Hudaibiyah
لَقَد رَضِىَ اللَّـهُ عَنِ المُؤمِنينَ إِذ يُبايِعونَكَ تَحتَ الشَّجَرَةِ فَعَلِمَ ما فى قُلوبِهِم فَأَنزَلَ السَّكينَةَ عَلَيهِم وَأَثـٰبَهُم فَتحًا قَريبًا ﴿الفتح: ١٨﴾
Certainly Allah Ta’ala was pleased with the believers (Sahaabah) when they pledged allegiance to you, [O Muhammad (Sallallahu Alayhi Wasallam)], under the tree (at Hudaibiyah), and He knew what was in their hearts, so He sent down tranquillity upon them and rewarded them with an imminent conquest.
Apart from the battle of Badr, Uhud and the pledge at Hudaibiyah, Allah Ta’ala praised the Sahaabah in many other places of the Holy Qur’an. Allah Ta’ala shows the Ummah the courage Sahaabah displayed at the battle of Ahzaab, the expedition of Tabouk, the hijrah they made to Madinah Tayyibah and the hardships and persecutions they endured at the hands of the kuffaar for the cause of Deen. On account of their sacrifices for Deen, Allah Ta’ala has declared his perpetual happiness for them. There is no other nation for whom Allah Ta’ala has declared His everlasting happiness in the Holy Qur’an, other than the Sahaabah. Every other nation that will come into this world before Qiyaamah will not receive the guarantee of Allah Ta’ala’s pleasure as the Sahaabah have received; instead their acquiring success is dependent upon them treading on the path of the Sahaabah. Allah Ta’ala says:
وَالسّـٰبِقونَ الأَوَّلونَ مِنَ المُهـٰجِرينَ وَالأَنصارِ وَالَّذينَ اتَّبَعوهُم بِإِحسـٰنٍ رَضِىَ اللَّـهُ عَنهُم وَرَضوا عَنهُ وَأَعَدَّ لَهُم جَنّـٰتٍ تَجرى تَحتَهَا الأَنهـٰرُ خـٰلِدينَ فيها أَبَدًا ۚ ذٰلِكَ الفَوزُ العَظيمُ ﴿التوبة: ١٠٠﴾
The first people of the Ummah to lead the way; the Muhajireen and the Ansar and those who followed them in goodness – Allah is well pleased with them and they are well pleased with Him, and He has prepared for them Gardens beneath which rivers flow, wherein they will abide forever. That is the supreme success.
The criteria for salvation and success
The Qur’an and Ahaadith are replete with the praises of the Sahaabah. In the Qur’an Allah Ta’ala praised them to such an extent that Allah Ta’ala made them the criteria for success. Allah Ta’ala says:
فَإِن ءامَنوا بِمِثلِ ما ءامَنتُم بِهِ فَقَدِ اهتَدَوا ﴿البقرة: ١٣٧﴾
So if they (the people) believe as you (O Sahaabah) have believed, then indeed they are on the right path.
Nabi (Sallallahu Alayhi Wasallam) said:
عن عبد الله بن عمرو قال : قال رسول الله صلى الله عليه و سلم ليأتين على أمتي ما أتى على بني إسرائيل حذو النعل بالنعل حتى إن كان منهم من أتى أمه علانية لكان في أمتي من يصنع ذلك وإن بني إسرائيل تفرقت على ثنتين وسبعين ملة وتفترق أمتي على ثلاث وسبعين ملة كلهم في النار إلا ملة واحدة قالوا ومن هي يا رسول الله قال ما أنا عليه وأصحابي (ترمذي 2/93)
Abdullah bin Amr (Radiyallahu Anhu) reports that Rasulullah (Sallallahu Alayhi Wasallam) said: “My ummah will be faced with conditions similar to which the Bani Israeel experienced; like a pair of shoes, one foot is identical to the other, to such an extent that if there was a situation in the Bani Israeel where a person openly committed incest with his mother, there will be someone in my ummah who will perpetrate such a crime. The Bani Israeel were divided into seventy two sects, and my ummah will be divided into seventy three sects. Each of them will be destined for Jahannam except one.” The Sahaaba-e-kiraam (Radiyallahu Anhum) asked: “Which group will be saved from the fire of Jahannam?” Nabi (Sallallahu Alayhi Wasallam) answered: “Those who tread upon my way and the way of my Sahaabah (Radiyallahu Anhum).”
عن العرباض بن سارية قال قال رسول الله صلى الله عليه وسلم عَلَيْكُم بِسنتي وَسنة الْخُلَفَاء الرَّاشِدين من بعدِي (ترمذي #2676)
Hazrat Irbaad bin Saariyah (Radiyallahu Anhu) reports that Rasulullah (Sallallahu Alayhi Wasallam) said: “ Hold firmly to my way and the ways of the rightly guided Khulafa who will come after me (Hazrat Abu Bakr Siddeeq, Hazrat Umar, Hazrat Usmaan and Hazrat Ali (Radiyallahu Anhum)).”
قال رسولُ الله – صلى الله عليه وسلم- : أصحابي كالنجومِ ، فبأيِّهِم اقتديتم اهتديتم
My Sahaabah are like guiding stars, whichever one of them you follow, you will be rightly guided.
عن حذيفة قال : قال رسول الله صلى الله عليه و سلم : اقتدوا باللذين من بعدي أبي بكر و عمر (ترمذي #3662)
Nabi (Sallallahu Alayhi Wasallam) said: After my demise, follow Hazrat Abu Bakr and Hazrat Umar (Radiyallahu Anhu).
عن عائشة رضي الله عنها قالت : قال رسول الله صلى الله عليه وسلم : لا ينبغي لقوم فيهم أبو بكر أن يؤمهم غيره. الترمذي 2/208
Hadhrat Aaisha (Radhiallahu Anha) reports that Rasulullah (Sallallahu Alaihi Wasallam) said: “In a gathering wherein Hadhrat Abu Bakr Siddeeq (Radhiallahu Anhu) is present, it does not behove anybody else to lead them in Salaah besides him.
From the above mentioned verse of the Qur’an and Ahaadith of Rasulullah (Sallallahu Alayhi Wasallam) we understand that without this Ummah holding firmly to the ways of the Khulafa-e-Rashideen and the Sahaabah and emulating them in all works of life, they will never attain salvation and success.
Sahaabah supporting Deen at the time of fithnah
Even after the demise of Rasulullah (Sallallahu Alayhi Wasallam), the Sahaabah remained steadfast protecting and safeguarding the Deen of Islam. In the time of Hadhrat Abu Bakr (Radiyallahu Anhu), the fitnah of irtidaad (apostasy) broke out in the ummah. At that crucial juncture, Allah Ta’ala divinely aided Hadhrat Abu Bakr (Radiyallahu Anhu) and the Sahaabah in combating the forces of kufr and preserving the Shari’ah of Islam. The words to Hadhrat Abu Bakr Siddeeq (Radiyallahu Anhu) ring aloud, not in the ears, but in the hearts of the believers until this day:
أينقص الدين و أنا حي
“Will any weakness creep into Deen while I (Abu Bakr) am alive?” 
In the era of Hadhrat Umar (Radiyallahu Anhu), the Roman and Persian emperors, Kisra andQaisar, mobilized their seemingly impregnable armies of a few hundred thousand against Islam. At that critical occasion when Islam was under attack, Allah Ta’ala divinely supported Hadhrat Umar (Radiyallahu Anhu) and the Sahaabah to preserve the Deen of Islam.
In the period of Hadhrat Uthmaan (Radiyallahu Anhu) when fitnah spread among the Muslims in Armenia and Azerbaijan with regard to the Qur’an, Hazrat Uthmaan (Radiyallahu Anhu) gathered the Sahaabah and transcribed the Qur’an according to the dialect of the Quraish (the original dialect in which the Qur’an was revealed to Rasulullah (Sallalalhu Alayhi Wasallam). Hence Allah Ta’ala assisted Hadhrat Uthmaan (Radiyallahu Anhu) and the Sahaabah to preserve the Qur’an.
During the Khilaafat of Hadhrat Ali (Radiyallahu Anhu), when the deviated sect, the Khawaarij, detached themselves from the Sahaabah (Radiyallahu Anhum) and the rest of the ummah, and began reinterpreting Deen and the Qur’an, Allah Ta’ala divinely empowered Hadhrat Ali (Radiyallahu Anhu) and the Sahaabah against them. Hence, wars and battles were fought by Sahaabah in the defence of Islam and thus the fitnah was eradicated and wiped out.
In essence, whenever a fitnah arose in the period of the Khulafaa-e-Raashideen and the Sahaabah and Islam was under attack or any aspect of the Shari’ah was targeted, Allah Ta’ala assisted the Sahaabah to stand up for the defence of Islam. They were prepared to sacrifice their wealth and property, as well as to lay down their lives for the protection and preservation of the Deen of Islam.