Sahih al-Bukhari 5062
Sahih al-Bukhari · Book 66: Virtues of the Qur'an · Recite the Qur'an together as long as you agree about its interpretation
Narrated `Abdullah:
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ ، حَدَّثَنَا شُعْبَةُ ، عَنْ عَبْدِ الْمَلِكِ بْنِ مَيْسَرَةَ ، عَنِ النَّزَّالِ بْنِ سَبْرَةَ ، عَنْ عَبْدِ اللَّهِ ، أَنَّهُ سَمِعَ رَجُلاً، يَقْرَأُ آيَةً، سَمِعَ النَّبِيَّ صلى الله عليه وسلم خِلاَفَهَا، فَأَخَذْتُ بِيَدِهِ فَانْطَلَقْتُ بِهِ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ " كِلاَكُمَا مُحْسِنٌ فَاقْرَآ ـ أَكْبَرُ عِلْمِي قَالَ ـ فَإِنَّ مَنْ كَانَ قَبْلَكُمُ اخْتَلَفُوا فَأَهْلَكَهُمْ " .
That he heard a man reciting a Quranic Verse which he had heard the Prophet (ﷺ) reciting in a different way. So he took that man to the Prophet (and told him the story). The Prophet (ﷺ) said, "Both of you are reciting in a correct way, so carry on reciting." The Prophet (ﷺ) further added, "The nations which were before you were destroyed (by Allah) because they differed."