And Abu Bakr ibn Abi Shaybah narrated it to us, Waki' narrated to us — and Muhammad ibn al-Muthanna narrated to me, 'Abd al-Rahman narrated to us — both of them from Sufyan, from Firas, with the chain of Shu'bah and Abu 'Awanah. As for the hadith of Ibn Mahdi, he mentioned in it "a prescribed punishment that he did not carry out." And in the hadith of Waki': "Whoever slaps his slave," and he did not mention the prescribed punishment.