Sahih Muslim 247
صحيح مسلم#247SahihIt is narrated on the authority of Abu Zubair that he heard Jabir b. 'Abdullah saying. I heard the Messenger of Allah (may peace and blessings be upon him) observing this:Between man and polytheism and unbelief is the abandonment of salat
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 1:154