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 10893

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 10893صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Supplications, remembrances, and prayer upon the chosen Prophet ﷺ
Chapter
Etiquette of supplication
Section
Among the etiquettes of supplication is that one praises Allah, then sends blessings upon the Prophet ﷺ
Numbering
Jami al-Kamil 10893 (2nd edition)
Azami 10893