صَحِيحُ مُسْلِمٍ
Sahih Muslim 646 b
The Book of Mosques and Places of Prayer
It is recommended to pray Subh early, at the beginning of its time, when it is still dark; and the length of recitation therein
وَحَدَّثَنَاهُ عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدٍ، سَمِعَ مُحَمَّدَ بْنَ عَمْرِو بْنِ الْحَسَنِ بْنِ عَلِيٍّ، قَالَ كَانَ الْحَجَّاجُ يُؤَخِّرُ الصَّلَوَاتِ فَسَأَلْنَا جَابِرَ بْنَ عَبْدِ اللَّهِ بِمِثْلِ حَدِيثِ غُنْدَرٍ .
Muhammad b. 'Amr al-Hasan b. 'All reported: Hajjaj used to delay the prayers, and so we asked Jabir b. 'Abdullah, and the rest of the hadith is the same.
Sahih Muslim, 646 bSahihصحيح