Abdullah bin Masud reported,

I never saw the Prophet ﷺ perform a prayer outside its appointed time except on two occasions. He combined the Maghrib and Isha prayers, and he prayed Fajr before its usual time.

Azami 5142

Sahih

عن ابن مسعود قال

ما رأيت النبي ﷺ صلى صلاة بغير ميقاتها إلا صلاتين: جمع بين المغرب والعشاء، وصلى الفجر قبل ميقاتها.

الأعظمي 5142صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Hajj
Chapter
Description of the Hajj of the Prophet ﷺ as narrated by Jabir and others, and the rulings mentioned therein
Section
Fajr prayer on the day of sacrifice at Muzdalifa
Numbering
Jami al-Kamil 5142 (2nd edition)
Azami 5142