Jami` at-Tirmidhi 1543
جامع الترمذي#1543SahihNarrated Thabit bin Adh-Dahhak:That the Messenger of Allah (ﷺ) said: "Whoever swears by a religion other than Islam while lying, then he is as he said
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
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 20:22