‏الأيمان : Hadeeth No:4040 Ibn 'Umar heard Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: He who has to take an oath, he must not take oath but by Allaah. The Quraish used to take oath by their fathers. So he (the Prophet) said: Do not take oath by your fathers....

‏الحج : Hadeeth No:2740 Ibn 'Abbas (Allaah be pleased with them) reported that the Prophet of Allaah (sallAllaahu alayhi wa sallam) got himself cupped in the state of lhrim....