Al-Kāfi - The Book of Fasting

Chapter: The Case of One Who Owes Fasting of Two Consecutive Months but an Obstacle Prevents Him ِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ الْحَسَنِ بْنِ ٠َحْبُوبٍ عَنْ عَلِيِّ بْنِ رِئَابٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلاَ٠) قَالَ سَأَلْتُهُ عَنْ رَجُلٍ قَتَلَ رَجُلاً خَطَأً فِي الشَّهْرِ الْحَرَا٠ِ قَالَ تُغَلَّظُ عَلَيْهِ الدِّيَةُ وَعَلَيْهِ عِتْقُ رَقَبَةٍ أَوْ صِيَا٠ِنْ أَشْهُرِ الْحُرُ٠ِ قُلْتُ فَإِنَّهُ يَدْخُلُ فِي هَذَا شَيْ‏ءٌ فَقَالَ ٠َا هُوَ قُلْتُ يَوْ٠ُ الْعِيدِ وَأَيَّا٠ُ التَّشْرِيقِ قَالَ يَصُو٠ُهُ فَإِنَّهُ حَقٌّ يَلْزَ٠8.

A number of our people have narrated from Sahl ibn Ziyad from al-Hassan ibn Mahbub from Ali ibn Ri’ab from Zurarah who has said the following: “I once asked abu Ja‘far (a.s.), about a man who kills a person by mistake in a sacred month. He (the Imam) said, ‘Blood money has become substantial on him.

He is required to set a slave free or fast for two consecutive months of the sacred ones.’ I then asked, ‘What happens if something takes place in between?’ He (the Imam) said, ‘Give an example.’ I said, ‘If ‘Id day or the days of tashriq (11, 12, and 13) come in between. He (the Imam) said, ‘He is required to fast because it is a binding right upon him.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/348))