(15) باب الْيَمِينِ فِي قَطِيعَةِ الرَّحِمِ
Narrated Abdullah ibn Amr ibn al-'As:
The Messenger of Allah (ﷺ) said: A vow is binding in those things by which the pleasure of Allah is sought, and an oath to break ties of relationship is not binding.
Reference: Sunan Abi Dawud 3273
In-book reference: Book 22, Hadith 32
English translation: Book 21, Hadith 3267