‏الزكاة : Hadeeth No:2225 It is narrated on the authority of Abu Huraira (that the Messenger of Allaah) said: Of course the person who gives to the family a she-camel as a gift, which gives milk morning and evening equal to a large bowl, its reward (the reward of the gift) is great....

‏البيوع : Hadeeth No:3713 A hadith like this has been narrated on the authority of Jabir (Allaah be pleased with him) from Allaah's Prophet (sallAllaahu alayhi wa sallam). but he made no mention of transactions years (ahead) implying Mu'awama....