Al-Kāfi
Hadith 103910ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ ابْنِ فَضَّالٍ قَالَ سَأَلَ عَلِيُّ بْنُ أَسْبَاطٍ أَبَا الْحَسَنِ (عَلَيْهِ الْسَّلام) وَنَحْنُ نَسْمَعُ الشَّفَقُ الْحُمْرَةُ أَوِ الْبَيَاضُ فَقَالَ الْحُمْرَةُ لَوْ كَانَ الْبَيَاضُ كَانَ إِلَى ثُلُثِ اللَّيْلِ.
10. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Faddal who has said the following: “Ali ibn Asbat once asked abu al-Hassan (a.s.), when we were listening, about the brightness if it is redness or whiteness. He (the Imam) said, ‘It is the redness; in the case of the condition of whiteness, it (virtuous time for al-Maghrib) remains up to one third of the night.’”