(15) باب الْكَفَّارَةِ قَبْلَ الْحِنْثِ
'Abdur-Rahman bin Samurah said:
"The Messenger of Allah said: 'If you swear an oath, offer expiation for your oath, then do that which is better.'" (ID)
Reference (ID): Sunan an-Nasa'i 3783 (ID)
In-book reference (ID): Book 35, Hadith 23 (ID)
English translation (ID): Vol. 4, Book 35, Hadith 3814 (ID)