Abu Hurairah said:Do not go our to meet what is being brought (to market for sale). If anyone does so and buys some of it, the owner of merchandise has a choice (of canceling the deal) when it comes to the market. Abu 'Ali said: I heard Abu Dawud say: Sufyan said: none of you must buy in opposition to one another ; that is he says: I have a better one for ten (dirhams)

English translation · Sunan Abu Dawud