صُمْ فِي الْعَامِ الْمُسْتَقْبَلِ يَوْمَ الْخَامِسِ مِنْ يَوْمِ صُمْتَ فِيهِ عَامَ أَوَّلَ.
“Abu ‘Abd Allah (a.s.), has said, ‘Fast on the fifth day of the coming year from the day you fasted the year before.’”
صُمْ فِي الْعَامِ الْمُسْتَقْبَلِ يَوْمَ الْخَامِسِ مِنْ يَوْمِ صُمْتَ فِيهِ عَامَ أَوَّلَ.
“Abu ‘Abd Allah (a.s.), has said, ‘Fast on the fifth day of the coming year from the day you fasted the year before.’”
كَتَبَ مُحَمَّدُ بْنُ الْفَرَجِ إِلَى الْعَسْكَرِيِّ ع يَسْأَلُهُ عَمَّا رُوِيَ مِنَ الْحِسَابِ فِي الصَّوْمِ عَنْ آبَائِكَ فِي عَدِّ خَمْسَةِ أَيَّامٍ بَيْنَ أَوَّلِ السَّنَةِ الْمَاضِيَةِ وَ السَّنَةِ الثَّانِيَةِ الَّتِي تَأْتِي فَكَتَبَ صَحِيحٌ وَ لَكِنْ عُدَّ فِي كُلِّ أَرْبَعِ سِنِينَ خَمْساً وَ فِي السَّنَةِ الْخَامِسَةِ سِتّاً فِيمَا بَيْنَ الْأُولَى وَ الْحَادِثِ وَ مَا سِوَى ذَلِكَ فَإِنَّمَا هُوَ خَمْسَةٌ
“Muhammad ibn al-Faraj once wrote to al-‘Askariy (a.s.), asking about what is narrated, for calculating to fast, from his ancestors about the five days of the last year and six days of the coming year. He (the Imam) wrote, ‘It is correct but count five days in every four years and in the sixth year six days in between
قُلْتُ لِأَبِي عَبْدِ اللَّهِ ع إِنَّا نَمْكُثُ فِي الشِّتَاءِ الْيَوْمَ وَ الْيَوْمَيْنِ لَا تُرَى شَمْسٌ وَ لَا نَجْمٌ فَأَيَّ يَوْمٍ نَصُومُ قَالَ انْظُرِ الْيَوْمَ الَّذِي صُمْتَ مِنَ السَّنَةِ الْمَاضِيَةِ وَ عُدَّ خَمْسَةَ أَيَّامٍ وَ صُمِ الْيَوْمَ الْخَامِسَ.
“I once said to abu ‘Abd Allah (a.s.), ‘In winter we cannot see the sun or stars for one or two days. When must we fast?’ He (the Imam) said, ‘Think, on what day you fasted last year, then count five days and fast on the fifth day.’”