Bukhari :: Book 8 :: Volume 75 :: Hadith 415
Narrated Abu Huraira:
The Prophet said, "There are two expressions which are very easy for the tongue to say, but they are very heavy in the balance and are very dear to The Beneficent (Allah), and they are, 'Subhan Allah Al-'Azim and 'Subhan Allah wa bihamdihi.'"
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