Sunan an-Nasa'i
Sunan an-Nasa'i 4463
أَخْبَرَنِي مُحَمَّدُ بْنُ قُدَامَةَ، عَنْ جَرِيرٍ، عَنْ مَنْصُورٍ، عَنْ أَبِي وَائِلٍ، عَنْ قَيْسِ بْنِ أَبِي غَرَزَةَ، قَالَ كُنَّا بِالْمَدِينَةِ نَبِيعُ الأَوْسَاقَ وَنَبْتَاعُهَا وَنُسَمِّي أَنْفُسَنَا السَّمَاسِرَةَ وَيُسَمِّينَا النَّاسُ فَخَرَجَ إِلَيْنَا رَسُولُ اللَّهِ صلى الله عليه وسلم فَسَمَّانَا بِاسْمٍ هُوَ خَيْرٌ لَنَا مِنَ الَّذِي سَمَّيْنَا بِهِ أَنْفُسَنَا فَقَالَ " يَا مَعْشَرَ التُّجَّارِ إِنَّهُ يَشْهَدُ بَيْعَكُمُ الْحَلِفُ وَاللَّغْوُ فَشُوبُوهُ بِالصَّدَقَةِ " .
Qays ibn Abi Ghazrah reported: In Madinah we traded in measures of goods, buying and selling, and called ourselves brokers, as did the people. The Messenger of Allah came out to us and gave us a better name than the one we used for ourselves. He said: O merchants, oaths and idle talk accompany your sales, so mix them with charity.