that the Messenger of Allah (ﷺ) said: "The covenant between us and them is the Salat, so whoever abandons it he has committed disbelief."
Jami` at-Tirmidhi Book 40, Hadith 16
← Previous Hadith that the Messenger of Allah (ﷺ) said: "Between a slave of Allah and disbelief is abandoning the Salat."

Jami` at-Tirmidhi Book 40, Hadith 15 Next Hadith → The Companions of Muhammad (ﷺ) didn't consider leaving anything to be disblief except for the Salat.

Jami` at-Tirmidhi Book 40, Hadith 17