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
وَحَدَّثَنَا مُحَمَّدُ بْنُ طَرِيفٍ، حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ، عَنِ الشَّيْبَانِيِّ، عَنْ عَبْدِ الْعَزِيزِ، بْنِ رُفَيْعٍ عَنْ تَمِيمٍ الطَّائِيِّ، عَنْ عَدِيِّ بْنِ حَاتِمٍ، أَنَّهُ سَمِعَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ ذَلِكَ .
This hadith is reported on the authority of Adi b. Hatim through another chain of transmitters.