سُبْحَانَ اللَّهِ وبِحَمْدِه ، سُبْحَان اللَّهِ الْعَظِيم

سُبْحَانَ اللَّهِ وبِحَمْدِه ، سُبْحَان اللَّهِ الْعَظِيم

These two kalmay are very light on tongue but will be very heavy in scales on Judegment Day. Should be read 100 times after Fajar prayer (or whenever we get up) and 100 times after Maghrib prayer, at least . According to hadith, even if one has sins equal to foam of sea, they are removed upon reciting these kalmay.