‏البر والصلة والآداب‏ : Hadeeth No:6181 Abu Huraira reported that a person said: Allaah's Messenger, who amongst the people is most deserving of my good treatment? He said: Your mother, again your mother, again your mother, then your father, then your nearest relatives according to the order (of nearness)....

‏الإيمان : Hadeeth No:249 Yazid b. al-Asamm said: I heard Abu Huraira saying that the Messenger of Allaah (sallAllaahu alayhi wa sallam) observed: people will certainly ask you about everything till they will propound: Allaah created every thing, but who created Allaah?...