Chapter on Times of Prayer and Sign of Each of Its Times
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 4
وَ رَوَى مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَحْبُوبٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ اَلْحُسَيْنِ عَنْ فَضَالَةَ عَنْ هِشَامِ بْنِ اَلْهُذَيْلِ عَنْ أَبِي اَلْحَسَنِ اَلْمَاضِي عَلَيْهِ اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنْ وَقْتِ صَلاَةِ اَلْفَجْرِ فَقَالَ« حِينَ يَعْتَرِضُ اَلْفَجْرُ فَتَرَاهُ مِثْلَ نَهَرِ سُورَاءَ»
Narrated by Muhammad ibn Ali ibn Mahbub from Ahmad ibn Muhammad ibn ‘Isa from al-Husayn from Fadalah from Hisham ibn al-Hudhayl from Abu al-Hasan al-Madi (peace be upon him), who said:
I asked Him عليه السلام about the time of the Fajr prayer, and Imam عليه السلام said: "When the dawn spreads horizontally, and you see it like a stream of light across the horizon."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 39
- Ṣaḥīḥ al-Tahdhīb