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
Tamim b. Tarafa reported: I heard 'Adi b. Hatim say that a person asked that and then narrated (the hadith) like one (mentioned above), but he made this addition: Here are four hundred (dirhams) for you out of my gift.
Authentic