Al-Kāfi - The Book of Prayer

Chapter: Salah (Prayer) For Eclipses َّدِ بْنِ الْحُسَيْنِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْعَلاَءِ بْنِ رَزِينٍ عَنْ ٠) قَالَ سَأَلْتُهُ عَنْ صَلاَةِ الْكُسُوفِ فِي وَقْتِ الْفَرِيضَةِ فَقَالَ ابْدَأْ بِالْفَرِيضَةِ فَقِيلَ لَهُ فِي وَقْتِ صَلاَةِ اللَّيْلِ فَقَالَ صَلِّ صَلاَةَ الْكُسُوفِ قَبْلَ صَلاَةِ اللَّيْلِ.

He (the Imam) said, ‘Begin with obligatory Salah (prayer).’ He (the Imam) was asked, ‘Can it be performed in the time of nightly optional Salah (prayer)?’ He (the Imam) said, ‘Perform Salah (prayer) because of eclipse before nightly optional Salah (prayer).”’ صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/441))