Jami` at-Tirmidhi 2622
جامع الترمذي#2622SahihNarrated Abdullah bin Shaqiq Al-'Uqayli:The Companions of Muhammad (ﷺ) didn't consider leaving anything to be disblief except for the Salat
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 ZaiIsnaad Sahih
In-book reference: 40:17