Hasan and Abdullah, the two sons of Muhammad bin Ali, narrate from their father that it was said to Sayyiduna Ali (may Allah be pleased with him) that Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) saw no harm in mut'ah marriage. He (may Allah be pleased with him) said: "The Messenger of Allah (peace and blessings be upon him) forbade mut'ah marriage and eating the meat of domestic donkeys on the day of Khaybar."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14145