‏البيوع : Hadeeth No:3904 'A'isha (Allaah be pleased with her) reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) bought from a Jew grain for a specified time; and gave him iron coat-of-mail of his as a pledge....

‏الجهاد والسير‏ : Hadeeth No:4458 It has been narrated on the authority of Yazid b. Hurmuz who said: Najda b. 'Amir al-Haruri wrote to Ibn Abbas asking him about the slave and the woman as to whether they would get a share from the booty (it they participated in Jihad) ; about the killing of (enemy) children (in war) ; about the orp...