‏البيوع : Hadeeth No:3648 Ibn 'Umar (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying,: He who bought foodgrain should not sell it until he had taken possession of it....

‏البيوع : Hadeeth No:3806 Rafi b. Khadij reported Allaah'& Messenger (sallAllaahu alayhi wa sallam) as saying: The price of a dog is evil, the earning of a prostitute is evil and the earning of a cupper is evil....