A True friend is one who sees a fault, gives you advice and who defends you in your absence.
Ali ibn Abi TalibDo not hate what you do not know, for the greater part of knowledge consists of what you do not know.
Ali ibn Abi TalibIf you find that somebody is not grateful for all that you have done for him, then do not get disappointed because often you will find that someone else feels under your obligation though you have done nothing for him and thus your good deeds will be compensated, and Allah will reward you for your goodness.
Ali ibn Abi Talib