Prayer Times
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 33
وَقَالَ أَبُو جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: «وَقْتُ اَلْمَغْرِبِ إِذَا غَابَ اَلْقُرْصُ.
Imam Muhammad ibn Ali Al-Baqir عليه السلام said: "The time for Maghrib (evening prayer) begins when the disk of the sun disappears."
- Ṣaḥīḥ al-Faqīh