Ubada bin As-Samit · The Book of Financial Transactions

the Messenger of Allah appointed a man in charge of kharibar and he brought some Janib dates. The messenger of Allah said; "Are all the dates if khaibar like this?" He said: "No (by Allah, O Messenger of Allah) we take a Sa of these for two for three Sas (of other types of dates)." The messenger of Allah said: "do not do that Sell the mixed dates for Dirhams then buy the Janib dates with the Dirhams" ,"

some dates from trees that were irrigated artificially were brought to the Messenger of Allah and the dates of the messenger of Allah were dates from trees that were nourished by their roots. He said: "Where did you get these from?" They said: "We bought a Sa of them for two Sa s of our dates: He said: "Do not do that, for this is not right. Rather sell your dates and but what you need of these,"

"We used to sell two Sa s of mixed dates for a Sa but the Prophet said (Do not sell) two Sa s dates for a Sa or two Sa s wheat or a Sa or two Dirhams for a Dirham. ,"