Sahih al-Bukhari 624
صحيح البخاري#624SahihNarrated `Abdullah bin Mughaffal Al-Muzani:Allah's Messenger (ﷺ) said thrice, "There is a prayer between the two Adhans (Adhan and Iqama)," and added, "For the one who wants to pray
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 10:21