Abu Dawud Book 16, Hadith Number 3330.
Chapter : Not known.
Narated By Suwayd ibn Qays : I and Makhrafah al-Abdi imported some garments from Hajar, and brought them to Mecca. The Apostle of Allah (PBUH) 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 Apostle of Allah (PBUH) said to him: Weigh out and give overweight.