صحيح مسلم
Sahih Muslim
كتاب القسامة
The Book of Oaths
باب نَدْبِ مَنْ حَلَفَ يَمِينًا فَرَأَى غَيْرَهَا خَيْرًا مِنْهَا أَنْ يَأْتِيَ الَّذِي هُوَ خَيْرٌ وَيُكَفِّرَ عَنْ يَمِينِهِ:
Chapter: It is recommended for the one who swears an oath then sees that something else is better than it; To do that which is better and offer expiation for his oath
Hadith 1651
This hadith is listed as number 4277 in Maktaba Shamila
حَدَّثَنِي مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ ، وَاللَّفْظُ لِابْنِ طَرِيفٍ ، وَمُحَمَّدُ بْنُ طَرِيفٍ الْبَجَلِيُّ ، قَالَا : حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ ، عَنْ الْأَعْمَشِ ، عَنْ عَبْدِ الْعَزِيزِ بْنِ رُفَيْعٍ ، عَنْ تَمِيمٍ الطَّائِيِّ ، عَنْ عَدِيٍّ ، قَالَ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " إِذَا حَلَفَ أَحَدُكُمْ عَلَى الْيَمِينِ فَرَأَى خَيْرًا مِنْهَا ، فَلْيُكَفِّرْهَا وَلْيَأْتِ الَّذِي هُوَ خَيْرٌ " ،
'Adi reported Allah's Messenger (ﷺ) as saying: When anyone amongst you takes an oath, but he finds (something) better than that he should expiate (the breaking of the oath), and do that which is better.
