The Messenger of Allah ﷺ said, "Whoever takes up arms against us is not one of us, and whoever deceives us is not one of us."
أن رسول الله ﷺ قال: من حمل علينا السلاح فليس منا، ومن غشنا فليس منا.
Muslim narrated it in the Book of Faith (101) through various routes from Suhayl bin Abu Salih, from his father, from Abu Hurairah, who mentioned it.