It is narrated from Hazrat Sahl (may Allah be pleased with him) that an Ansari companion came to the Prophet’s court and said,“O Messenger of Allah! If a man finds another man with his wife and kills him, will he also be killed in retaliation, or what will be done with him?”Upon this, Allah revealed the command of li’an, and the Noble Prophet (peace and blessings be upon him) said,“Allah has revealed His command concerning you and your wife.”Thus, both of them performed li’an in my presence, and the Noble Prophet (peace and blessings be upon him) separated them.