ʿUthmān ordered Zayd b. Thābit, Saʿīd b. al-ʿĀṣ, ʿAbdullāh b. al-Zubayr and ʿAbd al-Raḥman b. al-Ḥārith b. Hishām to write the Quran in the form of a maṣāḥif (books) and said to them. "In case you disagree with Zayd b. Thābit regarding any dialectic Arabic utterance of the Quran, then write it in the dialect of Quraysh, for the Quran was revealed in this dialect." So they did it.  

فَأَمَرَ عُثْمَانُ زَيْدَ بْنَ ثَابِتٍ وَسَعِيدَ بْنَ الْعَاصِ وَعَبْدَ اللَّهِ بْنَ الزُّبَيْرِ وَعَبْدَ الرَّحْمَنِ بْنَ الْحَارِثِ بْنِ هِشَامٍ أَنْ يَنْسَخُوهَا فِي الْمَصَاحِفِ وَقَالَ لَهُمْ إِذَا اخْتَلَفْتُمْ أَنْتُمْ وَزَيْدُ بْنُ ثَابِتٍ فِي عَرَبِيَّةٍ مِنْ عَرَبِيَّةِ الْقُرْآنِ فَاكْتُبُوهَا بِلِسَانِ قُرَيْشٍ فَإِنَّ الْقُرْآنَ أُنْزِلَ بِلِسَانِهِمْ فَفَعَلُوا  

Yaʿla used to say, "I wish I could see Messenger of Allah ﷺ at the time he is being inspired Divinely." When the Prophet ﷺ was at Al-Ja'rana and was shaded by a garment hanging over him and some of his companions were with him, a man perfumed with scent came and said, "O Messenger of Allah ﷺ! What is your opinion regarding a man who assumes Ihram and puts on a cloak after perfuming his body with scent?" The Prophet ﷺ waited for a while, and then the Divine Inspiration descended upon him. ʿUmar pointed out to Yaʿla, telling him to come. Yaʿla came and pushed his head (underneath the screen which was covering the Prophet ﷺ ) and behold! The Prophet's face was red and he kept on breathing heavily for a while and then he was relieved. Thereupon he said, "Where is the questioner who asked me about ʿUmra a while ago?" The man was sought and then was brought before the Prophet ﷺ who said (to him), "As regards the scent which you perfumed your body with, you must wash it off thrice, and as for your cloak, you must take it off; and then perform in your ʿUmra all those things which you perform in Hajj."  

أَنَّ يَعْلَى كَانَ يَقُولُ لَيْتَنِي أَرَى رَسُولَ اللَّهِ ﷺ حِينَ يُنْزَلُ عَلَيْهِ الْوَحْىُ فَلَمَّا كَانَ النَّبِيُّ ﷺ بِالْجِعْرَانَةِ وَعَلَيْهِ ثَوْبٌ قَدْ أَظَلَّ عَلَيْهِ وَمَعَهُ نَاسٌ مِنْ أَصْحَابِهِ إِذْ جَاءَهُ رَجُلٌ مُتَضَمِّخٌ بِطِيبٍ فَقَالَ يَا رَسُولَ اللَّهِ كَيْفَ تَرَى فِي رَجُلٍ أَحْرَمَ فِي جُبَّةٍ بَعْدَ مَا تَضَمَّخَ بِطِيبٍ فَنَظَرَ النَّبِيُّ ﷺ سَاعَةً فَجَاءَهُ الْوَحْىُ فَأَشَارَ عُمَرُ إِلَى يَعْلَى أَنْ تَعَالَ فَجَاءَ يَعْلَى فَأَدْخَلَ رَأْسَهُ فَإِذَا هُوَ مُحْمَرُّ الْوَجْهِ يَغِطُّ كَذَلِكَ سَاعَةً ثُمَّ سُرِّيَ عَنْهُ فَقَالَ أَيْنَ الَّذِي يَسْأَلُنِي عَنِ الْعُمْرَةِ آنِفًا فَالْتُمِسَ الرَّجُلُ فَجِيءَ بِهِ إِلَى النَّبِيِّ ﷺ فَقَالَ أَمَّا الطِّيبُ الَّذِي بِكَ فَاغْسِلْهُ ثَلاَثَ مَرَّاتٍ وَأَمَّا الْجُبَّةُ فَانْزِعْهَا ثُمَّ اصْنَعْ فِي عُمْرَتِكَ كَمَا تَصْنَعُ فِي حَجِّكَ