Sahih Muslim 1807
صحيح مسلم#1807SahihAbu Huraira reported Allah's Apostle (ﷺ) as saying When any one of you gets up at night, he should begin the prayer with two short rak'ahs
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: 6:235