Musannaf Ibn Abi Shaybah

Hazrat Mus'ab bin Sa'd narrates that when Hazrat Sa'd would complete the Tashahhud, he would then make this supplication: "Glory is for Allah alone, such that the heavens are filled, and the earth is filled, and whatever is between them is filled, and whatever is beneath the earth is filled." Hazrat Shu'bah says: I do not know whether he first said "Allah is the Greatest" or he said thus: "All praise is for Allah alone, praise that is pure and blessed. There is no god except Allah, He is alone, He has no partner, His is the dominion and for Him is all praise, and He has power over all things. O Allah! I ask You for all good." Then Hazrat Sa'd would say the salam.