‏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....

‏الأضاحي : Hadeeth No:4866 Abdullah b. Buraida reported on the authority of his father that Allaah's Messenger (sallAllaahu alayhi wa sallam) said this: I prohibited you from visiting the graves, but (now) you may visit them, and I prohibited you (from eating) the flesh of sacrific- ed animals beyond three days, but now keep ...