Amr bin 'Asim al-Kalabi عمرو بن عاصم الكلابي · The Book of Financial Transactions

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,"