Ali bin 'Asim bin S'hyb علي بن عاصم بن صهيب الواسطي · The Chapters on Marriage

Sa'd said: “The Messenger of Allah disapproved of Uthman bin Maz'un's desire to remain celibate; if he had given him permission, we would have gotten ourselves castrated.”

that the Messenger of said: 'Shall I not tell you of a borrowed billy goat.” They said: “Yes, O Messenger of!” He said: “He is Muhallil. May curse the Muhallil and the Muhallal lahu.”