Sahih Muslim 4239
صحيح مسلم#4239SahihIbn Umar reported that Allah's Apostle (ﷺ) forbade (people) taking vows, and said:It does not (necessarily) bring good (in the form of substantial, and tangible results), but it is the meant whereby something is extracted from the miserly persons
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: 26:5