‏البيوع : Hadeeth No:3692 Abu Huraira (Allaah be pleased with him) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) having given exemption of 'ariyya transactions measuring less than five wasqs or up to five wasqs (the narrator Dawud is in doubt whether it was five or less than five)....

‏النكاح : Hadeeth No:3268 Abu Huraira (Allaah be pleased with him) reported Allaah's Messenger (may peace upon him) having said this: One should not combine a woman and her father's sister, nor a woman and her mother's sister in marriage....