‏البيوع : Hadeeth No:3640 Ibn Abbas (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: He who buys foodgrain should not sell it until he has taken possession of it....

‏الصلاة : Hadeeth No:1059 Jabir b. 'Abdullah related that the Messenger of Allaah (sallAllaahu alayhi wa sallam) said, and he related like this....