Musannaf Ibn Abi Shayba 19:564

Abu Bakr narrated to us, he said: Ibn Fudayl narrated to us, from Isma'il ibn Sumay', from Malik ibn 'Umayr, from Ghiyath ibn Salamah, that 'Umar struck him with the prescribed punishment (hadd) and set him up for the people, except that he said: Hafs ibn 'Umar was brought.