(41) باب كَفَّارَةِ النَّذْرِ .
It was narrated that 'Imran bin Husain said:
"The Messenger of Allah said: 'There is no vow to commit an act of disobedience, and its expiation is the expiation for an oath.'"
Reference: Sunan an-Nasa'i 3840
In-book reference: Book 35, Hadith 80
English translation: Vol. 4, Book 35, Hadith 3871