Musnad Ahmad 1012:36

Surayj ibn al-Nu'man narrated to us, Hushaym narrated to us, from al-Mughirah, from al-Sha'bi, that 'Ubadah ibn al-Samit said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "There is no man who sustains a wound on his body, then gives it as charity (i.e., forgives the perpetrator or bears it with patience for the sake of Allah), except that Allah expiates from him the like of what he gave as charity."