مشكوة المصابيح
Mishkat al-Masabih
كتاب الإيمان والنذور
The Book of Oaths and Vows
(إِذَا رَأَى عَمَلًا صَالِحًا بَعْدَ الْقَسَمِ فَلْيَنْقُضْهُ وَلْيَفْعَلْهُ)
(If one sees a righteous deed after taking an oath, they should break it and perform the deed)
Hadith 3413
وَعَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ حَلَفَ عَلَى يَمِينٍ فَرَأَى خَيْرًا مِنْهَا فَلْيُكَفِّرْ عَنْ يَمِينِهِ وليفعل» . رَوَاهُ مُسلم
Abu Huraira reported God’s Messenger as saying, "If anyone swears an oath and considers something else to be better than it he should make atonement for his oath and do that.” Muslim transmitted it.
