Sahih al-Bukhari 5045
صحيح البخاري#5045SahihNarrated Qatada:I asked Anas bin Malik about the recitation of the Prophet. He said, "He used to pray long (certain sounds) very much
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: 66:69