Sahih Muslim 2948
صحيح مسلم#2948SahihQatada narrated this hadith with the same chain of transmitters saying:(That 'Umar also said): Separate your Hajj from 'Umra, for that is the most complete Hajj, and complete your Umra
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: 15:157