Chapter on Oaths, Vows, and Expiations
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 38
وَ رَوَى عَبْدُ اَللَّهِ بْنُ مُسْكَانَ عَنْ بَدْرِ بْنِ خَلِيلٍ قَالَ: سُئِلَ أَبُو عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ عَنْ رَجُلٍ كَانَ فِي حَبْسٍ فَقَالَ لِلَّهِ عَلَيَّ إِنْ خَرَجْتُ مِنْ حَبْسِي هَذَا أَنْ أَصُومَ سَنَةً فَخَرَجَ اَلرَّجُلُ مِنَ اَلْحَبْسِ وَ خَافَ أَنْ لاَ يُمْكِنَهُ أَنْ يَصُومَ سَنَةً كَيْفَ يَصْنَعُ قَالَ "يَصُومُ شَهْراً وَ مِنَ اَلشَّهْرِ اَلثَّانِي أَيَّاماً فَيَكُونُ قَدْ صَامَ شَهْرَيْنِ مُتَتَابِعَيْنِ ثُمَّ يَصُومُ بَعْدَ ذَلِكَ فَمَتَى أَفْطَرَ يَوْماً تَصَدَّقَ بِمُدٍّ وَ مَتَى صَامَ حُسِبَ لَهُ حَتَّى يَتِمَّ لَهُ سَنَةٌ".
Abdullah ibn Muskan narrated from Badr ibn Khalil, who said that Abu Abdillah عليه السلام was asked about a man who was imprisoned and vowed, saying, "It is upon me, for the sake of Allah سبحانه وتعالى, that if I am released from this prison, I will fast for a year." The man was then released from prison but feared that he might not be able to fast for an entire year. Imam عليه السلام said: "He should fast for one month, and then from the second month, he should fast a few days so that he completes two consecutive months. After that, he should continue fasting, and whenever he misses a day, he should give a mudd of food in charity. Whenever he fasts, it will be counted for him until he completes a year."
- Ṣaḥīḥ al-Faqīh