Sahih
Muslim
صحيح مسلم
27
The Book of Oaths
كتاب الأيمان
Chapter 3: 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
باب نَدْبِ مَنْ حَلَفَ يَمِينًا فَرَأَى غَيْرَهَا خَيْرًا مِنْهَا أَنْ يَأْتِيَ الَّذِي هُوَ خَيْرٌ وَيُكَفِّرَ عَنْ يَمِينِهِ
Sahih Muslim 1649 f
Zahdam al-Jarmi reported
I visited Abu Musa and lie was eating fowl's meat. The rest of the hadith is the same with this addition that he (the Holy Prophet ) said: By Allah, I did not forget it.وَحَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ، حَدَّثَنَا الصَّعْقُ، - يَعْنِي ابْنَ حَزْنٍ - حَدَّثَنَا مَطَرٌ الْوَرَّاقُ، حَدَّثَنَا زَهْدَمٌ الْجَرْمِيُّ، قَالَ دَخَلْتُ عَلَى أَبِي مُوسَى وَهُوَ يَأْكُلُ لَحْمَ دَجَاجٍ وَسَاقَ الْحَدِيثَ بِنَحْوِ حَدِيثِهِمْ وَزَادَ فِيهِ قَالَ " إِنِّي وَاللَّهِ مَا نَسِيتُهَا " .
Grade: Sahih