(15) باب الْكَفَّارَةِ قَبْلَ الْحِنْثِ
'Amr bin Shu'aib narrated from his father, from his grandfather, that the Messenger of Allah said:
"Whoever swears an oath, then sees something better than it, let him do that which is better." (ID)
Reference (ID): Sunan an-Nasa'i 3781 (ID)
In-book reference (ID): Book 35, Hadith 21 (ID)
English translation (ID): Vol. 4, Book 35, Hadith 3812 (ID)