Muhammad bin Yahya bin Hiban محمد بن يحيى بن حبان · The Book of Financial Transactions

"Do not go out to meet the riders, and do not urge someone to cancel a sale he has already agreed upon os as to sell him your own goods, do not artificially inflate prices, and let not a town-dweller sell for a desert-dweller." (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 was wearing two Qitri garments which, if he sat and sweated, would become heavy (and uncomfortable). A Jewish man got some fabric from Ash-sham so I said: 'Why don't you send word to him to buy two garments from him, and pay him when things get easier?' So he sent word to him, but he said: 'I know what Muhammad wants; he wants to go away with my money and take them (the two garments).' The…

"The Messenger of Allah said: 'Allah, the Mighty and Sublime, admitted to paradise a man who was easygoing in buying and selling, in paying off debts and asking for repayment."' (Sahaih)