Chapter on the Rulings of Missed Prayers
Tahdhīb al-Aḥkām|Volume 3|Book 1|Chapter 10
مُحَمَّدُ بْنُ يَعْقُوبَ عَنْ مُحَمَّدِ بْنِ يَحْيَى عَنْ مُحَمَّدِ بْنِ اَلْحُسَيْنِ عَنْ مُحَمَّدِ بْنِ يَحْيَى بْنِ حَبِيبٍ قَالَ: كَتَبْتُ إِلَى أَبِي اَلْحَسَنِ عَلَيْهِ اَلسَّلاَمُ تَكُونُ عَلَيَّ اَلصَّلاَةُ اَلنَّافِلَةُ مَتَى أَقْضِيهَا فَكَتَبَ« أَيَّ سَاعَةٍ شِئْتَ مِنْ لَيْلٍ أَوْ نَهَارٍ
Muhammad ibn Yaqub from Muhammad ibn Yahya from Muhammad ibn al-Husayn from Muhammad ibn Yahya ibn Habib. He said:
I wrote to Abu al-Hasan عليه السلام, peace be upon him: “I have missed the supererogatory prayers (nafilah), when should I make them up?” So Imam al-Ridha عليه السلام wrote: “Whenever you wish by night or by day.”
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 3, p. 184
- Ṣaḥīḥ al-Tahdhīb, p. 295