Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever, after the Fajr prayer, says this phrase one hundred (100) times, while his feet are folded (i.e., sitting in the posture of Tashahhud): «لَا إِلَهَ إِلَّا اللهُ ، وَحْدَهُ لَا شَرِيكَ لَهُ ، لَهُ الْمُلْكُ، وَلَهُ الْحَمْدُ ، يُحْيِي وَيُمِيتُ ، بِيَدِهِ الْخَيْرُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ» There is no deity worthy of worship except Allah, He is alone, He has no partner, sovereignty belongs to Him, all praise is for Him, He gives life and causes death, in His hand is all good, and He is powerful over everything. Then, in terms of deeds, he will be the most virtuous among the people of the earth, except for a person who does the same or more than this (then his rank will be equal to or greater than his)."