Oneness, Uniqueness of Allah (Tawheed)

Bukhari :: Book 9 :: Volume 93 :: Hadith 513

Narrated Sahl bin Sa'd:

The Prophet said to a man, "Have you got anything of the Qur'an?" The man said, "Yes, such-and-such Sura, and such-and-such Sura," naming the Suras.