Abu al-Zanad أبو الزناد · The Book of Financial Transactions

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 concluded the transaction.

"The Messenger of Allah said: 'If any one of you sells a sheep or a milch- camel, let him not refrain from milking it.'' (Sahih )

"The Messenger of Allah (ﷺ) forbade meeting traders on the way, until one enters the market with them?" Abu Usamah acknowledged it and said: Yes.

the Messenger of Allah sold a drinking bowl and a blanket (for a horse of camel) to the highest bidder '

"At the time of the Messenger of Allah, a man suffered loss of some fruit that he had purchased, and his debts increased. "The Messenger of Allah said: 'Give him charity.' So the people gave him charity, but that was not enough to pay off his debts. 'The Messenger of Allah said: 'Take what you find, but you have no right to more than that."' (meaning his creditors).

"A man has more right to his own wealth when he finds it, and the buyer should pursue the one who sold it to him."