كَتَبَ الْحُسَيْنُ إِلَى الرِّضَا ( عليه السلام ) جُعِلْتُ فِدَاكَ رَجُلٌ نَذَرَ أَنْ يَصُومَ أَيَّاماً مَعْلُومَةً فَصَامَ بَعْضَهَا ثُمَّ اعْتَلَّ فَأَفْطَرَ أَ يَبْتَدِئُ فِي صَوْمِهِ أَمْ يَحْتَسِبُ بِمَا مَضَى فَكَتَبَ إِلَيْهِ يَحْتَسِبُ مَا مَضَى .
Translation
A number of our companions, from Ahmad Bin Muhammad, from Ali Bin Ahmad Bin Asheym who said, ‘Al-Husayn wrote to (Imam) Al-Reza<sup>asws</sup>, ‘May I be sacrificed for you<sup>asws</sup>! A man vows that he would be Fasting for a known (number of) days. So he Fasts some of these, then he fell ill, so he broke. Should he begin his Fasting or can he count with what is past?’ So he<sup>asws</sup> wrote to him: ‘He can count what is past’.
Compiled by Shaykh Muhammad ibn Ya'qub al-Kulayni
Source
License: Free for educational and research use (Thaqalayn Data API)
Provided for research and educational purposes. Original source: Thaqalayn Project. Open License.