Ubaid Abu Salih said: I sold my cloth to the people of Dar Nakhlah (a place between Makkah and Taif) on a promise. When I was about to go to Kufa, those people said: If you reduce the price a little, we will pay you your money right now. I related this to Sayyiduna Zayd bin Thabit (may Allah be pleased with him), and he said: I do not permit you to eat or feed from that money.
Hadith Referenceموطا امام مالك رواية يحييٰ / كتاب البيوع / 1379