(5) باب فِي كَفَّارَةِ النَّذْرِ
'Uqba. b. Amir reported Allah's Messenger (ﷺ) as saying:
The expiation of the (breach of) a vow is the same as that of the (breach of an oath). (ID)
Reference (ID): Sahih Muslim 1645 (ID)
In-book reference (ID): Book 26, Hadith 18 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 14, Hadith 4034 (ID)