Sahih Muslim 3561
صحيح مسلم#3561SahihJabir (Allah be pleased with him) reported:We used to practise 'azl during the lifetime of Allah's Messenger (ﷺ). This (the news of this practise) reached Allah's Apostle (ﷺ), and he did not forbid us
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: 16:163