Sahih Muslim
The Book of Transactions (Kitab Al-Buyu)
Book Number: 010 / Hadith Number: 3785
Abu Huraira (Allah be pleased with him) reported Allah's Apostle (may peace be upon him) as saying: When a man becomes insolvent (and the other) man (the seller) finds his commodity intact with him, he is more entitled to get it (than anyone else)