Volume 8, Book 76, Number 574:
Narrated Abu Huraira:
I said, “O Allah’s Apostle! Who will be the luckiest person who will gain your intercession on the
Day of Resurrection?” The Prophet said, “O Abu Huraira! I have thought that none will ask me about
this Hadith before you, as I know your longing for the (learning of) Hadiths. The luckiest person who
will have my intercession on the Day of Resurrection will be the one who said, ‘None has the right to
be worshipped but Allah,’ sincerely from the bottom of his heart.”