وَعَن عقبَة بن عَامر عَنْ
رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «كَفَّارَةُ النَّذْرِ كَفَّارَةُ الْيَمِينِ»
Uqbah ibn Amir reported God’s Messenger as saying, “The atonement for a vow is the same as for an oath.”
Mishkat al-Masabih 3296, Book 16, Oaths and Vows, Hadith 24. 1 min read