Chapter on Fasting with Authorization
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 2|Chapter 31
وَ قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «فِي لَيْلَةِ تِسْعَ عَشْرَةَ مِنْ شَهْرِ رَمَضَانَ اَلتَّقْدِيرُ وَ فِي لَيْلَةِ إِحْدَى وَ عِشْرِينَ اَلْقَضَاءُ وَ فِي لَيْلَةِ ثَلاَثٍ وَ عِشْرِينَ إِبْرَامُ مَا يَكُونُ فِي اَلسَّنَةِ إِلَى مِثْلِهَا وَ لِلَّهِ عَزَّ وَ جَلَّ أَنْ يَفْعَلَ مَا يَشَاءُ فِي خَلْقِهِ».
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "On the night of the 19th of Month of Ramadan is the decree, on the night of the 21st is the judgment, and on the night of the 23rd is the confirmation of what will occur in the year until its similar time. And Allah سبحانه وتعالى, the Mighty and Majestic, has the authority to do as He wills with His creation."
- Ṣaḥīḥ al-Faqīh