‏النذر : Hadeeth No:4034 'Uqba. b. Amir reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The expiation of the (breach of) a vow is the same as that of the (breach of an oath)....

‏البيوع : Hadeeth No:3760 Abdullah b. Umar (Allaah be pleased with them) reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) contracted with the people of Khaibar (land and trees on the condition that they should give) half of the yield from land and trees. The rest of the hadith is the same. In the hadith transm...