(41) باب كَفَّارَةِ النَّذْرِ .
It was narrated from 'Uqbah bin 'Amir that the Messenger of Allah said:
"The expiation for vows is the expiation for an oath." (ID)
Reference (ID): Sunan an-Nasa'i 3832 (ID)
In-book reference (ID): Book 35, Hadith 72 (ID)
English translation (ID): Vol. 4, Book 35, Hadith 3863 (ID)