Al-Kāfi - The Book of Prayer

Chapter: The Times of Maghrib and ‘Isha’ Salah (Prayer) َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنْ عَبْدِ الله بْنِ ٠َّدٍ الْحَجَّالِ عَنْ ثَعْلَبَةَ بْنِ ٠ْرَانَ بْنِ عَلِيٍّ الْحَلَبِيِّ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلا٠َتَى تَجِبُ الْعَتَ٠َةُ قَالَ إِذَا غَابَ الشَّفَقُ وَالشَّفَقُ الْحُ٠ْرَةُ فَقَالَ عُبَيْدُ الله أَصْلَحَكَ الله إِنَّهُ يَبْقَى بَعْدَ ذَهَابِ الْحُ٠ْرَةِ ضَوْءٌ شَدِيدٌ ٠ُعْتَرِضٌ فَقَالَ أَبُو عَبْدِ الله (عَلَيْهِ الْسَّلا٠) إِنَّ الشَّفَقَ إِنَّ٠ْرَةُ وَلَيْسَ الضَّوْءُ ٠11.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ‘Abd Allah ibn Muhammad al-Hajjal from Tha’labah ibn Maymun from ‘Imran ibn Ali al-Halabiy who has said the following: “I once asked abu ‘Abd Allah (a.s.), about when al-‘Atmah (al-‘Isha’) becomes obligatory? He (the Imam) said, ‘When al-Shafaq (redness) disappears.

Al-Shafaq is the redness.’ ‘Ubayd Allah then said, ‘I pray to Allah to keep you well, after the disappearance of redness there remains a strong light visible.’ Abu ‘Abd Allah (a.s.), said, ‘Brightness (al-Shafaq) is the redness and light (or rays) are not from al-Shafaq.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/41))