Sahih Muslim 6935
صحيح مسلم#6935SahihAbu Huraira reported Allah's Messenger (ﷺ) as saying:The supplication of one of you is granted if he does not grow impatient and say- I supplicated my Lord but it was not granted
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: 48:126