Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 1476
Narated By Fudalah ibn Ubayd, : The Apostle of Allah (pbuh) heard a person supplicating during prayer. He did not mention the greatness of Allah, nor did he invoke blessings on the Prophet (pbuh).
The Apostle of Allah (pbuh) said: He made haste.
He then called him and said either to him or to any other person: If any of you prays, he should mention the exaltation of his Lord in the beginning and praise Him; he should then invoke blessings on the Prophet (pbuh); thereafter he should supplicate Allah for anything he wishes.