Musnad Ahmad 295:2

Abu Mu’awiyah narrated to us, he said: Hisham ibn ‘Urwah narrated to us, from his father, from ‘Abdullah ibn Zam’ah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "{When the most wretched of them was sent forth} [Ash-Shams: 12], a man who was reckless, powerful, and influential among his clan, like Ibn Zam’ah, was sent forth for it." Then he admonished them regarding laughing at a fart, and said: "Why does one of you laugh at what he does himself?" He said: Then he said: "Why does one of you whip his wife as the whipping of a slave, then perhaps he will lie with her at the end of his day?"