Muslim bin Ibrahim al-Azdy مسلم بن إبراهيم الأزدي الفراهيدي · Commercial Transactions (Kitab Al-Buyu)

I and Makhrafah al-Abdi imported some garments from Hajar, and brought them to Mecca. The Messenger of Allah (ﷺ) came to us walking, and after he had bargained with us for some trousers, we sold them to him. There was a man who was weighing for payment. The Messenger of Allah (ﷺ) said to him: Weigh out and give overweight.