Al-Kāfi
Hadith 88414- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَفْصِ بْنِ سُوقَةَ عَنِ ابْنِ بُكَيْرٍ عَنْ زُرَارَةَ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) أَيُّ شَيْءٍ لا نَذْرَ فِي مَعْصِيَةٍ قَالَ فَقَالَ كُلُّ مَا كَانَ لَكَ فِيهِ مَنْفَعَةٌ فِي دِينٍ أَوْ دُنْيَا فَلا حِنْثَ عَلَيْكَ فِيهِ.
14. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hafs ibn Sawqah from ibn Bukayr from Zurarah who has narrated the following: “I once asked abu ‘Abd Allah (a.s.), about the meaning of: ‘there is no vow and commitment in sinful matters’. He (the Imam) said, ‘Whatever is beneficial to you in the worldly matters or the hereafter, there is no violation in it.’”