Hadhrat Abu Darda (رضی اللہ عنہ) narrates that he heard the beloved Prophet (صلی اللہ علیہ وسلم) saying: Whosoever receives trouble from anyone and then he forgives the oppressor will have one degree raised by the Allah Almighty and a sin forgiven as well. (Tirmidhi)
Hadrat Jaudan (رضی اللہ عنہ) narrates that the beloved Prophet of Allah (صلی اللہ علیہ وسلم) said: whosoever brings a (right) excuse to his Muslim (brother) and he does not accept it, then the refusing person will be committing a sin like someone who extorts the people. (Ibn-e-Majah)
Hadhrat Abu Qatada (رضی اللہ عنہ) narrates that he heard the beloved Prophet (صلی اللہ علیہ وسلم) saying: Whosoever wants to save himself from the trouble of the day of judgement, he should relax his poor debtor or writes off some part of it (or in full). (Sahih Al-Muslim)