‏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....

‏فضائل الصحابة‏ : Hadeeth No:6109 Abu Usaid Ansari reported that he heard Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The worthiest of the Ansar or the worthiest of the settlements and the clans of Ansar; the rest of the hadith is the same, but there is no mention of the story of Sa'd b. 'Ubida (Allaah be pleased wi...