Chapter on Fasting with Authorization
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 2|Chapter 31
وَ سُئِلَ عَلَيْهِ اَلسَّلاَمُ: عَنْ لَيْلَةِ اَلْقَدْرِ فَقَالَ «تَنَزَّلُ فِيهَا اَلْمَلاَئِكَةُ وَ اَلْكَتَبَةُ إِلَى اَلسَّمَاءِ اَلدُّنْيَا فَيَكْتُبُونَ مَا يَكُونُ فِي أَمْرِ اَلسَّنَةِ وَ مَا يُصِيبُ اَلْعِبَادَ وَ أَمْرٌ عِنْدَهُ عَزَّ وَ جَلَّ مَوْقُوفٌ لَهُ فِيهِ اَلْمَشِيئَةُ فَيُقَدِّمُ مِنْهُ مَا يَشَاءُ وَ يُؤَخِّرُ مِنْهُ مَا يَشَاءُ وَ يَمْحُو وَ « يُثْبِتُ وَ عِنْدَهُ أُمُّ اَلْكِتٰابِ » ».
Imam عليه السلام was asked about Laylatul Qadr, and Imam عليه السلام said: "On it, the angels and the scribes descend to the lowest heaven, where they record what will occur during the year, including what will befall the servants. However, there is an affair with Allah سبحانه وتعالى, the Almighty and Majestic, that remains subject to His will: He advances from it what He wills, delays from it what He wills, erases, and establishes. 'And with Him is the Mother of the Book' (Surah Ar-Ra'd 13:39)."
- Ṣaḥīḥ al-Faqīh