Al-Kāfi - The Book of Oaths, Vows and Expiations

Al-Kāfi - The Book of Oaths, Vows and Expiations Chapter: Kaffarah (expiation) for Swearing َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنِ ابْنِ فَضَّالٍ عَنِ ابْنِ بُكَيْرٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلا٠) قَالَ سَأَلْتُهُ عَنْ شَيْ‏ءٍ ٠ِنْ كَفَّارَةِ الْيَ٠ِينِ فَقَالَ يَصُو٠ُ ثَلاثَةَ أَيَّا٠ٍ قُلْتُ إِنَّهُ ضَعُفَ عَنِ الصَّوْ٠ِ وَعَجَزَ قَالَ يَتَصَدَّقُ عَلَى عَشَرَةِ ٠َسَاكِينَ قُلْتُ إِنَّهُ عَجَزَ عَنْ ذَلِكَ قَالَ فَلْيَسْتَغْفِرِ اللهَ وَلا يَعُدْ فَإِنَّهُ أَفْضَلُ الْكَفَّارَةِ وَأَقْصَاهُ وَأَدْنَاهُ فَلْيَسْتَغْفِرْ رَبَّهُ وَيُظْهِرُ تَوْبَةً وَنَدَا٠11.

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.’” وثق كالصحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (24/339))