Chapter on the Prayer Times (Mawaqit)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 13
عَنْهُ عَنِ اَلْحُسَيْنِ بْنِ هَاشِمٍ عَنِ اِبْنِ مُسْكَانَ عَنِ اَلْحَلَبِيِّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ:« اَلْعَتَمَةُ إِلَى ثُلُثِ اَللَّيْلِ أَوْ إِلَى نِصْفِ اَللَّيْلِ وَ ذَلِكَ اَلتَّضْيِيعُ»
From him, from Al-Husayn ibn Hashim, from Ibn Muskan, from Al-Halabi:
Abu Abdillah عليه السلام, peace be upon him, said: "The time for the night prayer (Isha) extends until a third of the night or until midnight, and that (delay) is considered negligence."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 280
- Ṣaḥīḥ al-Tahdhīb, p. 162