٨ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ عَبْدِ الله بْنِ سِنَانٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَم) عَنِ الرَّجُلِ يَصُومُ صَوْماً قَدْ وَقَّتَهُ عَلَى نَفْسِهِ أَوْ يَصُومُ مِنْ أَشْهُرِ الْحُرُمِ فَيَمُرُّ بِهِ الشَّهْرُ وَالشَّهْرَانِ لا يَقْضِيهِ فَقَالَ لا يَصُومُ فِي السَّفَرِ وَلا يَقْضِي شَيْئاً مِنْ صَوْمِ التَّطَوُّعِ إِلاَّ الثَّلاثَةَ الأَيَّامِ الَّتِي كَانَ يَصُومُهَا مِنْ كُلِّ شَهْرٍ وَلا يَجْعَلُهَا بِمَنْزِلَةِ الْوَاجِبِ إِلاَّ أَنِّي أُحِبُّ لَكَ أَنْ تَدُومَ عَلَى الْعَمَلِ الصَّالِحِ قَالَ وَصَاحِبُ الْحُرُمِ الَّذِي كَانَ يَصُومُهَا وَيُجْزِئُهُ أَنْ يَصُومَ مَكَانَ كُلِّ شَهْرٍ مِنْ أَشْهُرِ الْحُرُمِ ثَلاثَةَ أَيَّامٍ.
8. A number of our people have narrated from Sahl ibn Ziyad from al-Hassan ibn Mahbub from ‘Abd Allah ibn Sinan who has said the following: “I once asked abu ’Abd Allah , about a man who fasts because of what he has timed upon himself or to fast of the sacred months and then one or two months pass during which he does not fast at all. He (the Imam) said, ‘He is not required to fast on a journey and there is not anything of Qada’ (compensatory fast) for optional fast except the three days that he would fast every month. He must not take it as obligatory except that I like you to continue with a good deed.’ He (the Imam) said, ’For the one committing himself to fast in the sacred months, fasting of three days, instead of fasting the whole of sacred month, is sufficient.’” 