It was narrated from Buraid bin Abi Mariam that his father said:"We were with the Messenger of Allah (ﷺ) on a journey, and we kept going one night, then when it was nearly morning the Messenger of Allah (ﷺ) dismounted and slept, and the people slept too. We did not wake up until the sun had risen. The Messenger of Allah (ﷺ) asked the Mu'adhdhin to call the Adhan, then he prayed the two Rak'ahs before Fajr, then he asked him to say the Iqamah, then he led the people in prayer. Then he told us about everything that will happen until the Hour begins."
أَخْبَرَنَا هَنَّادُ بْنُ السَّرِيِّ، عَنْ أَبِي الأَحْوَصِ، عَنْ عَطَاءِ بْنِ السَّائِبِ، عَنْ بُرَيْدِ بْنِ أَبِي مَرْيَمَ، عَنْ أَبِيهِ، قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي سَفَرٍ فَأَسْرَيْنَا لَيْلَةً فَلَمَّا كَانَ فِي وَجْهِ الصُّبْحِ نَزَلَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَنَامَ وَنَامَ النَّاسُ فَلَمْ نَسْتَيْقِظْ إِلاَّ بِالشَّمْسِ قَدْ طَلَعَتْ عَلَيْنَا فَأَمَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم الْمُؤَذِّنَ فَأَذَّنَ ثُمَّ صَلَّى الرَّكْعَتَيْنِ قَبْلَ الْفَجْرِ ثُمَّ أَمَرَهُ فَأَقَامَ فَصَلَّى بِالنَّاسِ ثُمَّ حَدَّثَنَا بِمَا هُوَ كَائِنٌ حَتَّى تَقُومَ السَّاعَةُ .
Nesai
The Book of the Times (of Prayer) • Hadith 621