Prayer Times
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 33
وَ سَأَلَهُ عُبَيْدُ بْنُ زُرَارَةَ: عَنْ وَقْتِ اَلظُّهْرِ وَ اَلْعَصْرِ فَقَالَ «إِذَا زَالَتِ اَلشَّمْسُ دَخَلَ وَقْتُ اَلظُّهْرِ وَ اَلْعَصْرِ جَمِيعاً إِلاَّ أَنَّ هَذِهِ قَبْلَ هَذِهِ ثُمَّ أَنْتَ فِي وَقْتٍ مِنْهُمَا جَمِيعاً حَتَّى تَغِيبَ اَلشَّمْسُ.
Ubaid ibn Zurarah asked Him, Imam Jafar ibn Muhammad Al-Sadiq عليه السلام, about the timing of the Dhuhr (noon) and Asr (afternoon) prayers. Imam عليه السلام replied: "When the sun declines (from its zenith), the time for both Dhuhr and Asr begins together, except that this (Dhuhr) is before that (Asr). Then you remain within the time for both of them until the sun sets”.
- Ṣaḥīḥ al-Faqīh