Riyad as-Salihin
Riyad as-Salihin 1368
Excellence of Fair Bargaining and Matters Relation to it
Arabic hadith text
وعن جابر رضي الله عنه أن رسول الله صلى الله عليه وسلم قال: "رحم الله رجلا سمحًا إذا باع وإذا اشترى وإذا اقتضى" ((رواه البخاري)).
Translation
Jabir (May Allah be pleased with him) reported
The Messenger of Allah (ﷺ) said, "May Allah show mercy to a man who adopts a kind attitude when he sells, buys and demands for the repayment of loans."[Al-Bukhari].