Authentic Supplication Number 120.

It is reported by way of ‘Abi Hurayrata that the Prophet  said: “Every address which has no tashahhud in it is thus like a hand that is mutulated.”

Reporters.
‘Al-‘Adawee said it was comely,and that it was reported by ‘Abu Dawood, page 173 of volume 5; and At-Tirmithi, page 239 of volume 4, who said it was comely-strange. ‘Al-‘Albani said it was sound in his Saheeh Al-Jami`i As-Sagheeri wa Ziyadatihi (#4520).