Narrated Zayd ibn Thabit:
Ibn Umar said: I bought olive oil in the market. When I became its owner, a man met me and offered good profit for it. I intended to settle the bargain with him, but a man caught hold of my hand from behind. When I turned I found that he was Zayd ibn Thabit. He said: Do not sell it on the spot where you have bought it until you take it to your house, for the Apostle of Allah (peace_be_upon_him) forbade to sell the goods where they are bought until the tradesmen take them to their houses.