Musannaf Ibn Abi Shayba 13:969

Abu Bakr narrated to us, he said: Waki’ narrated to us, from ‘Ali ibn Salih, from ‘Abd al-A’la, who said: I witnessed Shurayh imprison Rustam al-Darir for a debt. Waki’ said: We did not meet anyone among our judges, such as Ibn Abi Layla and others, except that he would imprison for debt.