`Uthman رضی اللہ عنہ called Zaid bin Thabit, `Abdullah bin Az-Zubair, Sa`id bin Al-`As and `Abdur Rahman bin Al-Harith bin Hisham رضی اللہ عنہم , and then they wrote the manuscripts of the Holy Qur'an in the form of book in several copies. `Uthman رضی اللہ عنہ said to the three Quraishi persons. " If you differ with Zaid bin Thabit رضی اللہ عنہ 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. (Sa`id bin Thabit was an Ansari and not from Quraish ).