‏البيوع : Hadeeth No:3718 Jabir b. Abdullah (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) having forbidden taking of rent or share of land....

‏الجهاد والسير‏ : Hadeeth No:4462 It has been narrated on the authority of Umm 'Atiyya, the Ansarite, who said: I took part with the Messenger of Allaah (sallAllaahu alayhi wa sallam) in seven battles. I would stay behind in the camp of men, cook their food, treat the wounded and nurse the aick....