Narrated by Abu Huraira:
The Prophet Muhammad (SallAllahu Alahi Wa Sallam) said,
“(There are) two words which are dear to the Beneficent (Allah) and very light (easy) for the tongue (to say), but very heavy in weight in the balance.
They are:
‘Subhan Allah wa-bi hamdihi’ and ‘Subhan Allah Al-‘Azim.”
Sahih Bukhari, Volume 9, Book 93, Number 652
Zakaria Bin Abdur Rouf 