Uqba bin Amir reported,

The Messenger of Allah ﷺ said, "The expiation for an unfulfilled vow is the same as the expiation for a broken oath."

Azami 7140

Sahih

عن عقبة بن عامر

عن رسول الله ﷺ قال: كفارة النذر كفارة اليمين.

الأعظمي 7140صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Oaths and vows
Chapter
Vows
Section
Whoever said there is expiation for a vow to commit a sin
Numbering
Jami al-Kamil 7140 (2nd edition)
Azami 7140