Full Sharh — Sahih al-Bukhari 3506
حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسٍ، أَنَّ عُثْمَانَ، دَعَا زَيْدَ بْنَ ثَابِتٍ وَعَبْدَ اللَّهِ بْنَ الزُّبَيْرِ وَسَعِيدَ بْنَ الْعَاصِ وَعَبْدَ الرَّحْمَنِ بْنَ الْحَارِثِ بْنِ هِشَامٍ فَنَسَخُوهَا فِي الْمَصَاحِفِ، وَقَالَ عُثْمَانُ لِلرَّهْطِ الْقُرَشِيِّينَ الثَّلاَثَةِ إِذَا اخْتَلَفْتُمْ أَنْتُمْ وَزَيْدُ بْنُ ثَابِتٍ فِي شَىْءٍ مِنَ الْقُرْآنِ، فَاكْتُبُوهُ بِلِسَانِ قُرَيْشٍ، فَإِنَّمَا نَزَلَ بِلِسَانِهِمْ. فَفَعَلُوا ذَلِكَ.
English Translation
Narrated Anas:`Uthman called Zaid bin Thabit, `Abdullah bin Az-Zubair, Sa`id bin Al-`As and `AbdurRahman bin Al-Harith bin Hisham, and then they wrote the manuscripts of the Holy Qur'an in the form of book in several copies. `Uthman said to the three Quraishi persons, "If you differ with Zaid bin Thabit on any point of the Qur'an, then write it in the language of Quraish, as the Qur'an was revealed in their language." So they acted accordingly. (Zaid bin Thabit was an Ansari and not from Quraish)
Source
Sahih al-Bukhari(صحيح البخاري)
Virtues and Merits of the Prophet (pbuh) and his Companions
Hadith Number
3506