قَالَ رَسُولُ اللهِ ﷺ: «كَلِمَتَانِ خَفِيفَتَانِ عَلَى اللِّسَانِ، ثَقِيلَتَانِ فِي الِميْزَانِ، حَبِيبَتَانِ إلَى الرَّحْمَنِ: سُبْحَانَ اللهِ وَ بِحَمْدِهِ، سُبْحَانَ اللهِ العَظِيْمِ»

The Messenger of Allāh \pbuh said: “There are two words (phrases), (which are) light on the tongue, heavy on the scale and beloved to the Most Gracious: ‘How perfect Allāh is and I praise Him.’ (and) ‘How perfect Allāh is, The Supreme.’”

Reference: The Messenger of Allāh \pbuh said: “There are two words (phrases), (which are) light on the tongue, heavy on the scale and beloved to the Most Gracious: ‘How perfect Allāh is and I praise Him.’ (and) ‘How perfect Allāh is, The Supreme.’” Al-Bukhārī (#3462, 7/168) and Muslim (#2694, 4/2072).