Musannaf Ibn Abi Shayba 13:1085

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Zubayr ibn ‘Adi, from Sulayman al-Hamdani, who said: I testified before Shurayh while I was a young boy. He poked his finger into a part of my body until it reached [the bone/the flesh].