Buraidah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "That which differentiates us from the disbelievers and hypocrites is our performance of Salat. He who abandons it, becomes a disbeliever."[At-Tirmidhi]. (ID)
App reference (ID): Book 9, Hadith 89 (ID)
Arabic/English book reference (ID): Book 9, Hadith 1079 (ID)