Sahih al-Bukhari 1682
Book 25: Hajj (Pilgrimage) · Narrated by `Abdullah
Arabic
حَدَّثَنَا عُمَرُ بْنُ حَفْصِ بْنِ غِيَاثٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا الأَعْمَشُ، قَالَ حَدَّثَنِي عُمَارَةُ، عَنْ عَبْدِ الرَّحْمَنِ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ مَا رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم صَلَّى صَلاَةً بِغَيْرِ مِيقَاتِهَا إِلاَّ صَلاَتَيْنِ جَمَعَ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ، وَصَلَّى الْفَجْرَ قَبْلَ مِيقَاتِهَا.
English translation
Narrated `Abdullah:I never saw the Prophet (ﷺ) offering any prayer not at its stated time except two; he prayed the Maghrib and the `Isha' together and he offered the morning prayer before its usual time
Reference: Sahih al-Bukhari 1682, Book of Hajj (Pilgrimage). English translation by Dr. Muhammad Muhsin Khan.