‏الذكر والدعاء والتوبة والاستغفار‏ : Hadeeth No:6533 Abu Bakr reported that he said to Allaah's Messenger (sallAllaahu alayhi wa sallam): Teach me a supplication which I should recite in my prayer. Thereupon he (the Prophet) said: Recite:" O Allaah, I have done great wrong to myself." According to Qutaiba (the words were: ) much (wrong) -there is none...

‏الإمارة : Hadeeth No:4521 This hadith has been narrated on the authority of Abu Huraira by more than one chain of transmitters....