Mishkat al-Masabih
Jabir reported God's Messenger as saying, “God show mercy to a man who is kindly when he sells, when he buys, and when he makes a claim!” Bukhari transmitted it.
عَنْ جَابِرٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: رَحِمَ اللَّهُ رَجُلًا سَمْحًا إِذَا بَاعَ وَإِذَا اشْتَرَى وَإِذَا اقْتَضَى رَوَاهُ البُخَارِيّ
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