Abdullah bin Numayr عبد الله بن نمير · The Chapters on Business Transactions

'(Sell) silver for silver, gold for gold, barley for barley, wheat for wheat, like for like."

“There will come a time when there will be no one left who does not consume usury (interest), and whoever does not consume it will nevertheless be affected by it."'

"A man came to the Prophet (ﷺ) and said, 'The tribe of Banu so-and- so, who were descended from the Jews, have become Muslim, and they are starving, and I am afraid that they may apostatize.' The Prophet (ﷺ) said: 'Who has something with him?' A Jewish man said: 'I have such and such, and he named it, and I think he said three hundred Dinar for such and such 'an amount (of produce) from the garden of the tribe…

"O Messenger of Allah, I have wealth and a son, and my father wants to take all my wealth." He said: "You and your wealth belong to your father."