Qatada قتادة · The Book of Financial Transactions

"The Messenger of Allah said: 'There will come a time when a man will not care where his wealth comes from, whether (the source is) Halal or Haram."

"The Messenger of Allah said: 'The two parties to a transaction both have the choice so long as they have not separated or they have chosen to conclude the transaction.' Or perhaps Nafi said: "Or one of them has said to the other: 'Decide! (Sahih )

"When two men enter into a transaction, each of them has the choice until they separate." On one occasion he said: "So long as they have not separated and one has not told the other to decide. If one tells the other to decide and they agree upon something, then the transaction is binding. If they separate after entering into a transaction and neither of them has canceled the transaction, then the transaction is binding." (Sahih )

"The Messenger of Allah said: 'When two people meet to engage in trade, the transaction between them is not binding until they separate, unless they have chosen to conclude the transaction.,'"

"The Messenger of Allah granted a concession allowing 'Araya sales by estimate."

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,"

"The Messenger of Allah said: 'Whoever buys food let him not sell it until he takes possession of it. Ibn 'Abbas said: "I think the same applies to everything else as to food."

"He put his armor in pledge for that with a Jew in Al-Madinah, and he took some barley from him for his family.

"The Messenger of Allah forbade charging stud fees for a stallion."

"A man from Banu As-Sa'q, one of Banu Kilab, came to the Messenger of Allah and asked him about charging stud fees for a stallion. He forbade him to do that, but he said: 'We give payment for that. "'