Sahih al-Bukhari 2721

ʿAbd Allah ibn Yusuf narrated to us; al-Layth narrated to us, who said: Yazid ibn Abi Habib narrated to me, from Abu al-Khayr, from ʿUqba ibn ʿAmir (may Allah be pleased with him), who said: The Messenger of Allah said, “The conditions most deserving of fulfillment are those by which you made marital relations lawful.”