I say, and with God's success: There are many evidences regarding the prohibition of temporary marriage, including: From Ali : "The Messenger of God  prohibited temporary marriage and the meat of domesticated donkeys during the time of Khaybar," and in another narration: "He prohibited the temporary marriage of women on the day of Khaybar and the meat of domesticated donkeys," narrated by Al-Bukhari (3979) and Muslim (1407). And from Al-Rabi' bin Sabra Al-Juhani , that his father told him that he was with the Messenger of God , who said: "O people, I had permitted you to enjoy temporary marriage with women, but God has prohibited that until the Day of Resurrection. So whoever has any of them, let him set them free, and do not take back anything you have given them," narrated by Muslim (1406), and God knows best.