٤- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ جَمِيلِ بْنِ دَرَّاجٍ عَنْ زُرَارَةَ عَنْ أَحَدِهِمَا (عَلَيْهِما السَّلام) قَالَ سَأَلْتُهُ عَمَّا يُكَفَّرُ مِنَ الأيْمَانِ فَقَالَ مَا كَانَ عَلَيْكَ أَنْ تَفْعَلَهُ فَحَلَفْتَ أَنْ لا تَفْعَلَهُ فَفَعَلْتَهُ فَلَيْسَ عَلَيْكَ شَيْ‏ءٌ إِذَا فَعَلْتَهُ وَمَا لَمْ يَكُنْ عَلَيْكَ وَاجِباً أَنْ تَفْعَلَهُ فَحَلَفْتَ أَنْ لا تَفْعَلَهُ ثُمَّ فَعَلْتَهُ فَعَلَيْكَ الْكَفَّارَةُ.
4. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Jamil ibn Darraj from Zurarah who has narrated the following: “I once asked one of the two Imam, (abu Ja‘far or abu ‘Abd Allah), ‘Alayhim al-Salam, about the case of the kind of oath which requires one to pay an expiation. He (the Imam) said, ‘It is when you are obligated to do something and you take an oath not to do it but you do it then there is nothing on you when you do it. What is not obligatory on you to do and you take an oath not to do it then you do it, then there is expiation on you.’” 