“[Of these stories mention] When Joseph said to his father, “O my father, indeed I have seen [in a dream] eleven stars and the sun and the moon; I saw them prostrating to me. He said, “O my son, do not relate your vision to your brothers or they will contrive against you a plan. Indeed Satan, to man, is a manifest enemy.” [Surah Yusuf, 12: 4,5]
Ibn Katheer in his explanation of this ayah says, “….Ya`qub feared that if Yusuf narrated his vision to any of his brothers, they would envy him and conspire evil plots against him.”
Yes, brothers and sisters in Islam, the evil eye is true. The Prophet said:
“The evil eye is real, and if anything were to overtake the divine decree (al-qadar) it would be the evil eye.”
This is a trait that Allah mentions in the Qur’an and our Prophet has warned us about:
‘The disease of previous nations has crawled its way to you: envy and hatred.’
What is Evil Eye?
The Arabic word al-‘ayn (translated as the evil eye) refers to when a person harms another with his eye. Its counterpart is hasad (jealousy), which is the hoping in the removal of the blessing from the one who is envied.
Simply put, when one sees his brother blessed with what Allah has given him, he hopes that his blessing disappears from him for no reason except for his envy towards him.
Origin of Jealousy
Jealousy is an ancient disease that finds its roots in Iblis, when he envied our father, Adam for the virtues Allah had blessed him with. Out of his envy and arrogance, he refused to prostrate to Adam claiming that he was better than him. Due to this, Allah sent him down to the earth and he became the leader of the evil and the wicked, a caller to every evil on earth till eternity, a caller to the fire. All this because of his jealousy.
Some Stories of Envy in the Qur’an:
Allah has revealed stories in the Qur’an pertaining to envy and jealousy so that we derive lessons from it and be warned, that indeed evil eye is true!
“And recite to them the story of Adam’s two sons, in truth, when they both offered a sacrifice [to Allah], and it was accepted from one of them but was not accepted from the other. Said [the latter], “I will surely kill you.” Said [the former], “Indeed, Allah only accepts from the righteous [who fear Him].”
Ibn Katheer says in his tafseer, “Allah describes the evil end and consequence of transgression, envy and injustice in the story of the two sons of Adam, Habil and Qabil. One of them fought against the other and killed him out of envy and transgression, because of the bounty that Allah gave his brother and because the sacrifice that he sincerely offered to Allah was accepted.
The murdered brother earned forgiveness for his sins and was admitted into Paradise, while the murderer failed and earned a losing deal in both the lives.”
“And he said, “O my sons, do not enter from one gate but enter from different gates…..”
In the explanation of this verse, Ibn Katheer says, “Allah says that Ya`qub, ordered his children, when he sent Binyamin with them to Egypt, to enter from different gates rather than all of them entering from one gate.
Ibn `Abbas, Muhammad bin Ka`b, Mujahid, Ad-Dahhak Qatadah, As-Suddi and several others said that he feared the evil eye for them, because they were handsome and looked beautiful and graceful. He feared that people might direct the evil eye at them, because the evil eye truly harms, by Allah’s decree, and brings down the mighty warrior-rider from his horse.”
The evil eye truly harms, by Allah’s decree, and brings down the mighty warrior-rider from his horse.
“Those to whom We gave the Scripture know him as they know their own sons. But indeed, a party of them conceal the truth while they know [it].” 
Why did the Jews not accept the message from our Prophet ? Not because of ignorance but sheer jealousy, as he was from the Arabs and not from the Jews!
Protect yourself from the evil if others through the Sunnah method