‏البيوع : Hadeeth No:3758 Ibn Umar (Allaah be pleased with them) reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) contracted with the people of Khaibar the (trees) on the condition that he would have half the produce in fruits and harvest....

‏الأيمان : Hadeeth No:4071 Hammam b. Munabbih reported: This is what Abu Huraira reported to us from Allaah's Messenger (sallAllaahu alayhi wa sallam), and he narrated a hadith and (one) of them is that Allaah's Messenger (sallAllaahu alayhi wa sallam) said: I swear by Allaah, it is more sinful in Allaah's sight for one of yo...