Al-Mughira b. Shu'ba stated that the Prophet used to say after every prescribed prayer, “There is no god but God alone, who has no partner. To Him belongs the kingdom, to Him praise is due, and He is omnipotent. O God, no one can withhold what Thou givest, or give what Thou withholdest, and riches cannot avail a wealthy person with Thee.”
Thauban said that when God’s Messenger finished his prayer he asked forgiveness three times and said, “O God, Thou art Peace, and peace comes from Thee. Blessed art Thou, O Possessor of glory and honour.”
‘Abdallah b. az-Zubair said that when God’s Messenger uttered the salutation at the end of his prayer he used to say as loudly as he could. “There is no god but God alone who has no partner. To Him belongs the kingdom, to Him praise is due, and He is omnipotent. There is no might or power except in God. There is no god but God whom alone we worship. To Hirn belongs wealth, to Him belongs grace, and to Him is worthy praise accorded. There is no god but God to whom we are sincere in devotion, even though the infidels should disapprove’ (Al-Qur’an; 40:14).
‘A’isha said that when God’s Messenger uttered the salutation he sat no longer than it took to say, “O God, Thou art Peace, and peace comes from Thee. Blessed art Thou, O Possessor of glory and honour.”