Abu Said (RA) reported: We were given to eat, during the lifetime of Allahs Messenger ﷺ , dates of different qualities mixed together, and we used to sell two sas of these for one sa, (of fine quality of dates). This reached Allahs Messenger ﷺ , whereupon he said: There should be no exchange of two sas of (inferior) dates for one sa (of fine dates) and two sas of (inferior) wheat for one sa of (fine) wheat. and one dirham for two dirharms.