Ibn Shihab reported,

Umar bin Abdul-Aziz once delayed the prayer, so Urwa bin Zubayr came in to see him and told him that Mughira bin Shuba had also delayed the prayer one day while he was in Iraq. Abu Masud al-Ansari came in to see him and said, "What is this, Mughira? Do you not know that Jibreel ﷺ came down and prayed, and the Messenger of Allah ﷺ prayed with him, then he prayed and the Messenger of Allah ﷺ prayed with him, then he prayed and the Messenger of Allah ﷺ prayed with him, then he prayed and the Messenger of Allah ﷺ prayed with him, then he prayed and the Messenger of Allah ﷺ prayed with him, then he said, 'With this I have been commanded.'"Umar said to Urwa, "Be sure of what you are reporting. Was it really Jibreel who established the prayer times for the Messenger of Allah ﷺ?"Urwa replied, "That is how Bashir bin Abu Masud used to narrate it from his father."

Bukhari 521

Sahih

حدثنا عبد الله بن مسلمة قال قرأت على مالك

عن ابن شهاب

أن عمر بن عبد العزيز أخر الصلاة يوما فدخل عليه عروة بن الزبير فأخبره أن المغيرة بن شعبة أخر الصلاة يوما وهو بالعراق فدخل عليه أبو مسعود الأنصاري فقال ما هذا يا مغيرة أليس قد علمت أن جبريل ﷺ نزل فصلى فصلى رسول الله ﷺ ثم صلى فصلى رسول الله ﷺ ثم صلى فصلى رسول الله ﷺ ثم صلى فصلى رسول الله ﷺ ثم صلى فصلى رسول الله ﷺ ثم قال بهذا أمرت فقال عمر لعروة اعلم ما تحدث أوأن جبريل هو أقام لرسول الله ﷺ وقت الصلاة قال عروة كذلك كان بشير بن أبي مسعود يحدث عن أبيه

البخاري 521صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Prayer times
Chapter
Times of prayer and its virtue
Numbering
Darussalam 521
Bukhari 521