Prayer (Kitab Al-Salat): Details of Commencing Prayer
Dawud :: Book 3 : Hadith 970
Narrated Samurah ibn Jundub:
The Apostle of Allah (peace_be_upon_him) commanded us (to recite) when we sit in the middle of the prayer or at its end before the salutation: The adorations of the tongue, all good things, acts of worship, and the Kingdom are due to Allah. Then give salutation to the right side; then salute your reciter (i.e. the imam) and yourselves.