Sunan an-Nasa'i 3836
سنن النسائي#3836SahihIt was narrated from 'Aishah that the Messenger of Allah said:"There is no vow to commit an act of disobedience, and its expiation is the expiation for an oath
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 35:76