GEN1099 If someone injured you, even though he paid fully, he is not forgiven until he asks your forgiveness. [Bava Kama 92a. This is learned out from what Hashem told Avimelech to do after he had been smitten because of taking Sarah.] Chazal [Mishnah, Bava Kama 92a. Rambam, Hilchos De’os 6:6; Choshen Mishpat 422:1. This shows that you are only obliged to forgive him in order not to be cruel, but you are not in violation of bearing a grudge if you do not forgive him, even after he asked your forgiveness. However, this might be restricted to physical assault for which bearing a grudge is permitted according to most Poskim. (Mitzvos HaLevavos)] say that if you do not forgive, you are considered cruel, but you must forgive as Avraham did as it is written [this verse].  CASTLE 829-30