‏الإيمان : Hadeeth No:379 It is reported on the authority of Abu Huraira that there was placed before the Messenger of Allaah a cup of soft bread, soup and meat. He took part of the foreleg which he liked most. He sliced (with his teeth) a slice (out of that) and said: I would be the leader of mankind on the Day of Resurrect...

‏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....