(9) باب مَا جَاءَ فِي تَرْكِ الصَّلاَةِ
Narrated Abdullah bin Shaqiq Al-'Uqayli:
The Companions of Muhammad (ﷺ) didn't consider leaving anything to be disblief except for the Salat. (ID)
Reference (ID): Jami` at-Tirmidhi 2622 (ID)
In-book reference (ID): Book 40, Hadith 17 (ID)
English translation (ID): Vol. 5, Book 38, Hadith 2622 (ID)