Musnad Ahmad 33:717

Yunus narrated to us, Hammad—meaning Ibn Salamah—narrated to us, from Ali ibn Zayd and Asim al-Ahwal, from Abu Nadrah, from Jabir ibn Abdullah, who said: "We performed two types of Mut'ah during the time of the Prophet, may Allah bless him and grant him peace: the Mut'ah of Hajj and the Mut'ah of women." "Then Umar forbade us from both of them, so we desisted."