كَلِمَتَانِ خَفِيْفَتَانِ عَلىَ اللِّسَانِ، ثَقِيْلَتَانِ فِي المِيْزَانِ، حَبِيْبَتَانِ إِلىَ الرَّحْمن: سُبْحَانَ الله وَبِحَمْدِهِ، سُبْحَانَ اللهِ الْعَظِيْمِ
Narrated Abu Huraira: The Prophet 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.”
“Kalimatan (two words)… habibatan (both beloved)… ila-Rahman (to The Merciful)… Subhan Allahi wa bihamdi (Glory be to Allah and by His praise)… Subhan Allah il-`atheem (Glory be to Allah, the Immense).”
Sahih Al-Buhari Hadith No. 673, Vol. 8