Musannaf Ibn Abi Shayba 19:246

Abu Bakr narrated to us, he said: Ibn Fudayl narrated to us, from Ibn Shubruma, who said: I was with al-Sha'bi, and a man was brought who had been seized for a hadd punishment or for slander. He struck him with the hadd punishment while he was wearing a shirt; I do not know what was underneath it.