٦ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ عَلِيِّ بْنِ مُحَمَّدٍ الْقَاسَانِيِّ عَنْ سُلَيْمَانَ بْنِ حَفْصٍ الْمَرْوَزِيِّ عَنْ أَبِي الْحَسَنِ الْعَسْكَرِيِّ (عَلَيْهِ الْسَّلام) قَالَ إِذَا انْتَصَفَ اللَّيْلُ ظَهَرَ بَيَاضٌ فِي وَسَطِ السَّمَاءِ شِبْهُ عَمُودٍ مِنْ حَدِيدٍ تُضِي‏ءُ لَهُ الدُّنْيَا فَيَكُونُ سَاعَةً ثُمَّ يَذْهَبُ وَيُظْلِمُ فَإِذَا بَقِيَ ثُلُثُ اللَّيْلِ ظَهَرَ بَيَاضٌ مِنْ قِبَلِ الْمَشْرِقِ فَأَضَاءَتْ لَهُ الدُّنْيَا فَيَكُونُ سَاعَةً ثُمَّ يَذْهَبُ وَهُوَ وَقْتُ صَلاَةِ اللَّيْلِ ثُمَّ يُظْلِمُ قَبْلَ الْفَجْرِ ثُمَّ يَطْلُعُ الْفَجْرُ الصَّادِقُ مِنْ قِبَلِ الْمَشْرِقِ قَالَ وَمَنْ أَرَادَ أَنْ يُصَلِّيَ صَلاَةَ اللَّيْلِ فِي نِصْفِ اللَّيْلِ فَذَلِكَ لَهُ. 
6. Ali ibn Ibrahim has narrated from Ali ibn Muhammad al-Qasaniy from Sulayman ibn Hafs af-Marwaziy who has said the following: “Abu al-Hassan, al-‘Askariy , has said, ‘At midnight a white spot appears in the middle of the sky like a pillar of iron, because of which it gives light in the world. This is there for an hour, then it goes out and it becomes dark. When there is one-third of the night left, whiteness appears in the east, which gives light to the world and it after an hour goes out. That is the time for Salah (prayer) of night. It then becomes dark before dawn: then the true dawn appears from the east.’ He (the Imam) said, ‘Those who like to perform Salah (prayer) of night at midnight that is for them.’” 