Sahih Muslim 260
صحيح مسلم#260SahihAnas narrated from the Apostle (ﷺ) about the major sins. He (the Holy Prophet) observed:Associating anyone with Allah, disobedience to parents, killing a person and false utterance
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: 1:166