Hadrat Omar Radiyallaahu anhu has said that one should refrain from the friendship of an ill-charactered person as one is bound to suffer at such a person’s hands even if he desires to do good.
Hadrat Ali Radiyallaahu anhu has said that one should save oneself from being deceived by a friend and from being deceived by an enemy.
Hadrat Ali Radiyallaahu anhu has said that one should interact with friends humbly, with enemies intelligently and all others with large heartedness.
Hadrat Omar bin Abdul Aziz Rahmatullahi alaihi has said that a good (pious) friend is like salt on the table of life, without which all pleasures are bland.
To have ties of friendship with the enemies of Allah Ta’ala and with the enemies of Deen is tantamount to having enmity for Allah Ta’ala. (Mujaddid Alfe Thani Rahmatullahi alaihi)
One will not be fulfilling the right of friendship if one fears the displeasure of one’s friend and therefore, avoids telling him the truth. (Mujaddid Alfe Thani Rahmatullahi alaihi)
Regard him as a friend who, exposes your faults to you, praises you in your absence and helps you at the time of your difficulty. (Calipha Ma’mun Ar Rashid)