15ـ عَلِيُّ بْنُ مُحَمَّدٍ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ عَلِيِّ بْنِ الرَّيَّانِ قَالَ كَتَبْتُ إِلَيْهِ
الرَّجُلُ يَكُونُ فِي الدَّارِ تَمْنَعُهُ حِيطَانُهَا النَّظَرَ إِلَى حُمْرَةِ الْمَغْرِبِ وَمَعْرِفَةَ مَغِيبِ الشَّفَقِ وَوَقْتِ صَلاَةِ الْعِشَاءِ الآخِرَةِ مَتَى يُصَلِّيهَا وَكَيْفَ يَصْنَعُ فَوَقَّعَ (عَلَيْهِ الْسَّلام) يُصَلِّيهَا إِذَا كَانَ عَلَى هَذِهِ الصِّفَةِ عِنْدَ قَصْرَةِ النُّجُومِ وَالْمَغْرِبَ عِنْدَ اشْتِبَاكِهَا وَبَيَاضُ مَغِيبِ الشَّمْسِ قَصْرَةُ النُّجُومِ إِلَى بَيَانِهَا.
15. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from Ali ibn al-Rayyan who has said the following: “I once wrote to the man (the Imam) ‘Alayhi al-Salam, and asked about a man who is within the house. The walls do not allow him to see the redness in the west to find about al-Shafaq (redness) and the time for al-‘Isha’ al-Akhirah. When must he perform Salah (prayer) and what should he do? He (the Imam) 
, signed the answer that said,
‘He performs it (al-‘Isha’) when on this side, stars appear and al-Maghrib when just few stars appear. The clarity of sunset is from the appearance of few stars until their clearly becoming visible.’”
