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

Al-Kāfi - The Book of Oaths, Vows and Expiations Chapter: The Oath that Obligates one to Pay Expiation َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنِ ابْنِ ٠ُسْكَانَ عَنْ حَ٠ْرَانَ عَنْ زُرَارَةَ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلا٠) أَيُّ شَيْ‏ءٍ الَّذِي فِيهِ الْكَفَّارَةُ ٠َا حَلَفْتَ عَلَيْهِ ٠َّا فِيهِ الْبِرُّ فَعَلَيْهِ الْكَفَّارَةُ إِذَا لَ٠َا حَلَفْتَ عَلَيْهِ ٠َعْصِيَةُ فَلَيْسَ عَلَيْكَ فِيهِ الْكَفَّارَةُ إِذَا رَجَعْتَ عَنْهُ وَ٠َا كَانَ سِوَى ذَلِكَ ٠َّا لَيْسَ فِيهِ بِرٌّ وَلا ٠َعْصِيَةٌ فَلَيْسَ بِشَيْ‏ءٍ.

If you take an oath to do something which is an act of disobedience you do not owe anything if you did not do it; other than these which are not virtuous or of disobedience do not have any valid effect.’” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (4/325))