Jami` at-Tirmidhi 1354
جامع الترمذي#1354SahihAbu Hurairah narrated that the Messenger of Allah (ﷺ) said:“The oath is based upon what will make your companion believe you.” [Qutaibah (one of the narrators) said: “ What will make you believed by your companion”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 15:34