Musannaf Ibn Abi Shayba 13:2084

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from ‘Abd al-‘Aziz ibn Rufay’, who said: Ibn Sirin was asked about *al-‘inah*. He said: A man would go out for an hour to the market, so he would sell for cash and he would sell on credit.