Sahih al-Bukhari 6406
Sahih al-Bukhari · Book 80: Invocations · The superiority of Tasbih
Narrated Abu Huraira:
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ ، حَدَّثَنَا ابْنُ فُضَيْلٍ ، عَنْ عُمَارَةَ ، عَنْ أَبِي زُرْعَةَ ، عَنْ أَبِي هُرَيْرَةَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " كَلِمَتَانِ خَفِيفَتَانِ عَلَى اللِّسَانِ، ثَقِيلَتَانِ فِي الْمِيزَانِ، حَبِيبَتَانِ إِلَى الرَّحْمَنِ، سُبْحَانَ اللَّهِ الْعَظِيمِ، سُبْحَانَ اللَّهِ وَبِحَمْدِهِ " .
The Prophet (ﷺ) 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.'"