Musannaf Ibn Abi Shayba 13:3449

Abu Bakr narrated to us, he said: Abu Usamah narrated to us, from Hisham, from al-Hasan and Muhammad, that they both said regarding a man who sells a basket (of dates) or a garment, then gives him the remainder of it by count, while he (the seller) measures it: They both disliked that.