Musannaf Ibn Abi Shayba 19:254

Abu Bakr narrated to us, he said: Shareek narrated to us, from Salamah ibn al-Majnun, he said: I said to a man, "O you who does [such and such] with his mother." He said: So they brought me before Abu Hurairah, and he struck me. He said: And nothing pained me except a whip that landed upon a whip.