Musannaf Ibn Abi Shaybah 21263 — A man who witnesses food being

Maymun al-Qannad said: I asked Sa'id bin al-Musayyib: "A man buys al-Hashimiyyah and I watch it being weighed. May I buy it by that same weight?" He said: "It used to be said: That is the usury (riba) that has mingled with measure and weight."