Sahih Muslim 2987
صحيح مسلم#2987SahihHafsa (Allah be pleased with her) said:Messenger of Allah; the rest of the hadith is the same and (the concluding words of the Holy Prophet):" I won't put off Ihram until I have sacrificed the animal
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: 15:195