Jami` at-Tirmidhi 3477

Amr bin Malik Al-Janbi narrated that he heard Fadalah bin `Ubaid saying:“The Prophet (ﷺ) heard a man supplicating in his Salat but he did not send Salat upon the Prophet (ﷺ), so the Prophet (ﷺ) said: ‘This one has rushed.’ Then he called him and said to him, or to someone other than him: ‘When one of you performs Salat, then let him begin by expressing gratitude to Allah and praising Him. Then, let him send Salat upon the Prophet (ﷺ), then let him supplicate after that, whatever he wishes.’”