It was narrated from Abu Hurairah:

"The Messenger of Allah (ﷺ) finished a prayer in which he recited out loud, then he said: 'Did any one of you recite with me just now?' A man said: 'Yes, O Messenger of Allah.' He said: 'I was wondering what was distracting me in reciting Quran.'" So the people stopped reciting in prayers in which the Messenger of Allah (ﷺ) recited out loud when they heard that.

أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنِ ابْنِ أُكَيْمَةَ اللَّيْثِيِّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم انْصَرَفَ مِنْ صَلاَةٍ جَهَرَ فِيهَا بِالْقِرَاءَةِ فَقَالَ ‏"‏ هَلْ قَرَأَ مَعِي أَحَدٌ مِنْكُمْ آنِفًا ‏"‏ ‏.‏ قَالَ رَجُلٌ نَعَمْ يَا رَسُولَ اللَّهِ ‏.‏ قَالَ ‏"‏ إِنِّي أَقُولُ مَا لِي أُنَازَعُ الْقُرْآنَ ‏"‏ ‏.‏ قَالَ فَانْتَهَى النَّاسُ عَنِ الْقِرَاءَةِ فِيمَا جَهَرَ فِيهِ رَسُولُ اللَّهِ صلى الله عليه وسلم بِالْقِرَاءَةِ مِنَ الصَّلاَةِ حِينَ سَمِعُوا ذَلِكَ ‏.‏