(40) باب اسْتِحْبَابِ التَّبْكِيرِ بِالصُّبْحِ فِي أَوَّلِ وَقْتِهَا وَهُوَ التَّغْلِيسُ وَبَيَانِ قَدْرِ الْقِرَاءَةِ فِيهَا
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.
Reference: Sahih Muslim 646 b
In-book reference: Book 5, Hadith 297
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1349