It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) that when Uwaymir performed li'an (mutual imprecation) with his wife in the presence of the Messenger of Allah (peace and blessings be upon him), Uwaymir stood before the Messenger of Allah (peace and blessings be upon him) and said: "O Messenger of Allah! If I keep her, I will have wronged her; so she is divorced irrevocably."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5668