Sahih Muslim 2776
صحيح مسلم#2776SahihA'isha (Allah be pleased with her) and Ibn Numair reported Allah's Messenger (ﷺ) as saying:Look for (and in the words of Waki, seek) Lailat-ul-Qadr in the last ten nights of Ramadan
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: 13:282