Riyad as-Salihin
Riyad as-Salihin 1375
Excellence of Fair Bargaining and Matters Relation to it
Arabic hadith text
وعن أبي صفوان سويد بن قيس، رضي الله عنه قال: جلبت أنا ومخرمة العبدي بزًا من هجر، فجاءنا النبي صلى الله عليه وسلم فساومنا سراويل، وعندي وزان يزن بالأجر، فقال النبي صلى الله عليه وسلم للوزان "زن وأرجح" ((رواه أبو داود والترمذي وقال: حديث حسن صحيح)).
Translation
Abu Safwan Suwaid bin Qais (May Allah be pleased with him) reported
Makhramah Al-'Abdi and I procured some drapery from Hajar and brought them to Makkah. The Prophet (ﷺ) came and bargained with us for some trousers and we sold them to him. We had a person who weighed the cloth in order to fix the price. The Prophet (ﷺ) said to him, "Weigh and add a little to it."[Abu Dawud and At- Tirmidhi].