عَنِ الْبَيَاضِيِّ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ خَرَجَ عَلَى النَّاسِ وَهُمْ يُصَلُّونَ وَقَدْ عَلَتْ أَصْوَاتُهُمْ بِالْقِرَاءَةِ فَقَالَ: ((إِنَّ الْمُصَلِّي يُنَاجِي رَبَّهُ عَزَّ وَجَلَّ فَلْيَنْظُرْ مَا يُنَاجِيهِ، وَلَا يَجْهَرْ بَعْضُكُمْ عَلَى بَعْضٍ بِالْقُرْآنِ))
It is narrated from Sayyiduna Bayazi (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) came to the people while they were praying and their voices were raised with recitation. He (peace and blessings be upon him) said: Surely, the one who is praying is whispering to his Lord, so he should pay attention to whom he is whispering, and no one should recite the Qur'an aloud over another.