Fadala bin Ubayd reported,

He said, the Messenger of Allah ﷺ heard a man supplicating in his prayer without glorifying Allah and without sending blessings upon the Prophet ﷺ. The Messenger of Allah ﷺ said, "This man has been hasty."Then he called him over and said to him, or to someone else, "When one of you prays, let him begin by glorifying his Lord and praising Him, then send blessings upon the Prophet ﷺ, and after that he may supplicate for whatever he wishes."

Azami 2172

Sahih

عن فضالة بن عبيد صاحب رسول الله ﷺ

يقول: سمع رسول الله ﷺ رجلا يدعو في صلاته، لم يمجد الله، ولم يصل على النبي ﷺ فقال رسول الله ﷺ: عجل هذا ثم دعاه فقال له، أو لغيره: إذا صلى أحدكم فليبدأ بتمجيد ربه والثناء عليه، ثم يصلي على النبي ﷺ، ثم يدعو بعد بما شاء.

الأعظمي 2172صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Prayer
Chapter
Tashahhud and salam
Section
Prayer upon the Prophet ﷺ in the tashahhud
Numbering
Jami al-Kamil 2172 (2nd edition)
Azami 2172