(15) باب الْكَفَّارَةِ قَبْلَ الْحِنْثِ
It was narrated from 'Abdur-Rahman bin Samurah that the Prophet said:
"If you swear an oath, then you see something better than it, then offer expiation for your oath, and do that which is better."
Reference: Sunan an-Nasa'i 3784
In-book reference: Book 35, Hadith 24
English translation: Vol. 4, Book 35, Hadith 3815