حَدَّثَنَا أَبُو مُعَاوِيَةَ حَدَّثَنَا الْأَعْمَشُ عَنْ عُمَارَةَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَزِيدَ قَالَ قَالَ عَبْدُ اللَّهِ مَا رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ صَلَّى صَلَاةً إِلَّا لِمِيقَاتِهَا إِلَّا صَلَاتَيْنِ صَلَاةَ الْمَغْرِبِ وَالْعِشَاءِ بِجَمْعٍ وَصَلَاةَ الْفَجْرِ يَوْمَئِذٍ قَبْلَ مِيقَاتِهَا
مسند امام احمد بن حنبل · Hadith 3637
It was narrated that Abdur-Rahman bin Yazeed said: 'Abdullah (RA) said: I never saw the Messenger of Allah (PBUH) offer any prayer that was not on time except in two cases: Maghrib and 'Isha' in Muzdalifah, and he prayed Fajr on that day before the time when he usually prayed it (but after ascertaining that dawn had broken).
Sanad
حَدَّثَنَا أَبُو مُعَاوِيَةَ حَدَّثَنَا الْأَعْمَشُ عَنْ عُمَارَةَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَزِيدَ قَالَ قَالَ عَبْدُ اللَّهِ