Jabir ibn 'Abdullah · The Chapters on Business Transactions

'The one who strives to support the widow and the poor is like a Mujahid who fights in the cause of Allah, and like one who stands in the night (in voluntary prayer) and fasts by day."

"Let one of you not undersell another."

Whoever agrees with a Muslim to cancel a transaction Allah will forgive his sins on the Day of Resurrection. "

"When anyone of you buys a slave woman let him say: 'Allahumma inni as'aluka khairaha wa khaira ma jabaltaha alaihi, wa a'udhu bika min sharriha wa sharri ma jabaltaha alaihi (O Allah, I ask You for the goodness within her and the goodness that You have made her inclined towards, and I seek refuge with You from the evil within her and the evil that You have made her inclined towards).' And he should pray for blessing. And if anyone…

the Messenger of Allah (ﷺ) forbade the Muhaqalah and the Muzabanah.

"Zaid bin Thabit narrated to me that the Messenger of Allah (ﷺ) gave a concession regarding the sale of 'Araya.”