Chapter on Times of Prayer and Sign of Each of Its Times

And it was narrated from Muhammad ibn Ya’qub, from Ali ibn Ibrahim, from Muhammad ibn ‘Isa, from Yunus, from Yazid ibn Khalifah, who said: I said to Abu Abdillah عليه السلام: “‘Umar ibn Hanzalah came to us with a timing from you.” So Abu Abdillah عليه السلام said: “Then he does not lie upon us.” I said: “He (Umar ibn Hanzalah) said: ‘The time of Maghrib is when the disk (of the sun) disappears, except that the Messenger of Allah سبحانه وتعالى, may Allah سبحانه وتعالى bless him and his family, when travel became intense upon him, would delay Maghrib and combine it with ‘Isha’.” Imam عليه السلام said: “He (Umar ibn Hanzalah) has spoken the truth.” And Imam عليه السلام said: “The time of ‘Isha’ al-Akhirah is from when the twilight disappears until one-third of the night, and the time of Fajr is from when it first appears until it brightens.”