Al-Kāfi
Hadith 84211- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ فَضَّالٍ عَنِ ابْنِ بُكَيْرٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلام) قَالَ سَأَلْتُهُ عَنْ شَيْءٍ مِنْ كَفَّارَةِ الْيَمِينِ فَقَالَ يَصُومُ ثَلاثَةَ أَيَّامٍ قُلْتُ إِنَّهُ ضَعُفَ عَنِ الصَّوْمِ وَعَجَزَ قَالَ يَتَصَدَّقُ عَلَى عَشَرَةِ مَسَاكِينَ قُلْتُ إِنَّهُ عَجَزَ عَنْ ذَلِكَ قَالَ فَلْيَسْتَغْفِرِ اللهَ وَلا يَعُدْ فَإِنَّهُ أَفْضَلُ الْكَفَّارَةِ وَأَقْصَاهُ وَأَدْنَاهُ فَلْيَسْتَغْفِرْ رَبَّهُ وَيُظْهِرُ تَوْبَةً وَنَدَامَةً.
11. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Faddal from ibn Bukayr from Zurarah who has narrated the following: “I once asked abu Ja‘far (a.s.), about the Kaffarah (expiation) due to oath. He (the Imam) said, ‘It is fasting for three days.’ I then asked, ‘What happens if one feels weak and cannot do it?’ He (the Imam) said, ‘He can give charity to ten destitute people.’ I asked, ‘What happens if he cannot do it?’ He (the Imam) said, ‘He must ask forgiveness from Allah and must not do such thing again because the best is Kaffarah (expiation) in its highest and lowest form, so he must ask forgiveness from his Lord and express regret and repentance.’”