حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدِ بْنِ إِبْرَاهِيمَ، عَنْ مُحَمَّدِ بْنِ عَمْرٍو، - وَهُوَ ابْنُ الْحَسَنِ بْنِ عَلِيِّ بْنِ أَبِي طَالِبٍ - قَالَ - سَأَلْنَا جَابِرًا عَنْ وَقْتِ، صَلاَةِ النَّبِيِّ صلى الله عليه وسلم فَقَالَ كَانَ يُصَلِّي الظُّهْرَ بِالْهَاجِرَةِ وَالْعَصْرَ وَالشَّمْسُ حَيَّةٌ وَالْمَغْرِبَ إِذَا غَرَبَتِ الشَّمْسُ وَالْعِشَاءَ إِذَا كَثُرَ النَّاسُ عَجَّلَ وَإِذَا قَلُّوا أَخَّرَ وَالصُّبْحَ بِغَلَسٍ ‏.‏

Muhammad b. 'Amr b. al-Hasan reported: We asked Jabir about the time of the prayer of the Messenger of Allah (PBUH). He said: He used to offer the Zuhr prayer in the midday heat, the 'Asr prayer when the sun was bright, the Maghrib prayer when the sun had completely set, the Isha prayer early when many people were present, but late if there were few, and the Fajr prayer in the darkness (of the dawn). Translation Not Available

Book Ref: Sunan Abi Dawud Book 2 Hadith 397
Web Ref:  Sunan Abi Dawud Book 2 Hadith 397