Allah the Exalted’s saying, “But whoever forgoes it charitably”: that is, retaliation. “It shall be an expiation for him.” It was said that the pronoun in “for him” refers to the injured person and the slain person’s legal heir; that is, it is an expiation for the one who relinquishes his right. This was the view of ‘Abd Allah ibn ‘Amr ibn al-‘As, al-Hasan, al-Sha‘bi, and Qatadah.
Abu Sa‘id Ahmad ibn Ibrahim al-Shurayhi informed us; Abu Ishaq Ahmad ibn Muhammad ibn Ibrahim al-Tha‘labi informed us; ‘Abd Allah al-Husayn ibn Muhammad al-Daynawari informed us; ‘Umar ibn al-Khattab informed us; ‘Abd Allah ibn al-Fadl informed us; Abu Khaythamah informed us; Jarir informed us, from Mughirah, from al-Sha‘bi, from ‘Ubadah ibn al-Samit—may Allah be pleased with him—who said: The Messenger of Allah, may Allah bless him and grant him peace, said: “Whoever relinquishes something from his own body in charity, Allah will expiate from his sins in proportion to it.” (1)
A group of scholars said that it refers to the assailant and the killer. That is, if the victim forgives the offender, his forgiveness is an expiation for the offender’s sin, for which he will not be held to account in the Hereafter—just as retaliation is an expiation for him. As for the reward of the one who forgives, it rests with Allah, the Most High. Allah the Exalted says: “Whoever pardons and makes reconciliation, his reward is with Allah.” (al-Shura 42:40) This was related from Ibn ‘Abbas—may Allah be pleased with him—and it was the view of Ibrahim, Mujahid, and Zayd ibn Aslam. “And whoever does not judge by what Allah has revealed—it is they who are the wrongdoers.”