Sufyan bin Sa‘id Ath-Thawri سفيان الثوري · The Chapters on Business Transactions

his father asked the Prophet (ﷺ) about the earnings of a cupper and he forbade him from that. Then he mentioned his need and he said: "Spend it on feeding your she-camels that draw water."

"The Messenger of Allah (ﷺ) forbade meeting traders on the way."

"There are three to whom Allah will not speak on the Day of Resurrection nor will He look at them or purify them, and theirs will be a painful torment." I said: "Who are they, O Messenger of Allah? For they are indeed losers." He said: "The one who lets his garment hang beneath his ankles, the one who reminds another of what he has given him, and the one who sells his product by means of false oaths."

'The Messenger of Allah (ﷺ) forbade selling food bought by measure until two Sa' have been measured - the Sa' of the seller and the Sa' of the buyer."

"We used to buy food from troops of riders (i.e., the caravans) without knowing the amount, but the Messenger of Allah (ﷺ) forbade us to sell it until it had been delivered to us."

"I heard the Messenger of Allah (ﷺ) say: 'Measure your food, may you be blessed therein."'

"Measure your food, may you be blessed therein."

"I heard him meaning Ibn 'Abbas allowing exchange (of Dirhams for Dirham etc., if extra was given) and that was narrated from him. Then I heard that he has taken back this opinion. I met him in Makkah and said: 'I heard that you had taken back (your opinion).' He said: 'Yes. That was just my own opinion, but Abu Sa'eed narrated from the Messenger of Allah (ﷺ) that he forbade exchange (of like items if extra is given)."'

"I heard 'Umar say: "The Messenger of Allah (ﷺ), said: 'Gold for silver is usury, unless it is exchanged on the spot."' (Sahih) Abu Bakr bin Abu-Shaibah said: "I heard sufyan saying: 'Gold for silver." memorize (this).

"The Messenger of Allah (ﷺ) forbade breaking the coins of the Muslims that are in circulation among them, without any necessary reason.”(1)

"You were my partner during the Ignorance period and you were the best of partners, you did not contend or dispute."