Forgiving

Imam Baqir (as) said: There are three acts with which a Muslim attains honor: forgiving the oppressor, giving to the deprived, and establishing ties with the one who has cut off relations with him.

Imam Sadiq (as) quoted on the authority of Holy Prophet (saw): Forgive since it will cause you to attain honor. Forgive each other so that Allah honors you.

Imam Baqir (as) said: Getting sorry that you forgave is better and easier then getting sorry that you punished.

Imam Sajjad (as) said: If someone swears at you on your right side, and then goes to your left side and apologizes, accept is apology.

Imam Sadiq (as) quoted on the authority of Holy Prophet (saw): Accept apologies, whether or not they are right. I will not intercede on behalf of anyone who does not accept an apology.

Reference: Mishkat ul Anwar: Section 5, Chapter 3