‏الهبات : Hadeeth No:3958 Ibn Abbas (Allaah be pleased with them) reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: One who gets back the gift is like one who eats vomit....

‏الإمارة : Hadeeth No:4568 It has been narrated on the authority of Aba Sa'id al-Khudri that the Messenger of Allaah (sallAllaahu alayhi wa sallam) said: When oath of allegiance has been taken for two caliphs, kill the one for whom the oath was taken later....