Whoever recites this:
سُبْحَانَ اللّٰهِ وَبِحَمْدِهِ
How perfect Allaah is and I praise Him.
Subhaanallaahi wa bihamdihi.
...one hundred times in the morning and in the evening will not be surpassed on the Day of Resurrection by anyone having done better than this except for someone who had recited it more.