Jami` at-Tirmidhi 312
جامع الترمذي#312SahihAbu Hurairah narrated:"Allah's Messenger turned (after praying) from a Salat in which he recited aloud and said: 'Has any one of you recite along with me just now?' A man said: 'Yes, O Messenger of Allah.' He said: 'Indeed I said to myself: Why was I being contended with for the Quran?'" He (Az-Zuhri one of the narrators) said: "So when they heard that from Allah's Messenger, the people stopped reciting with Allah's Messenger in the prayers that Allah's Messenger recited aloud
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 2:164