‏الصلاة : Hadeeth No:1532 Abu Huraira reported the Prophet of Allaah (sallAllaahu alayhi wa sallam) as saying: When the prayer commences, there is no prayer but the obligatory one....

‏الإيمان : Hadeeth No:273 It is narrated on the authority of Anas that verily the Messenger of Allaah (sallAllaahu alayhi wa sallam) observed: The Hour (Resurrection) would not come so long as Allaah is supplicated in the world....