‏الزكاة : Hadeeth No:2342 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: I go back to my family and I find a date lying on my bed. I then take it up to eat it, but then I throw it away fearing that it may be a Sadaqa....

‏البيوع : Hadeeth No:3866 Fadala b. 'Ubaid reported: We were in the company of Allaah's Messenger ( sallAllaahu alayhi wa sallam) on the day (of the Victory of) Khaibar, and made transaction with the Jews for the 'uqiya of gold for the dinars or three (gold coins), whereupon Allaah's Messenger (sallAllaahu alayhi wa sallam) ...