I heard Hisham b. Hakim (b. Hizam) reciting Surah al-Furqan in a different manner from my way of reciting, and the Messenger of Allah ﷺ had taught me to recite it. I nearly spoke sharply to him, but I delayed till he had finished. Then I caught his cloak at the neck, and I brought him to the Messenger of Allah ﷺ. I said: Messenger of Allah, I heard this man reciting Surah al-Furqan in a manner different from that in which you taught me to recite it. The Messenger of Allah ﷺ the told him to recite it. He then recited in the manner I heard him recite. The Messenger of Allah ﷺ said: Thus was it sent down. He then said to me: Recite, I recited (it). He then said: Thus was it sent down. He said: The Qur'an was sent down in seven modes of reading, so recite according to what comes most easily. (Using translation from Abū Dāʾūd 1475)  

سَمِعْتُ هِشَامَ بْنَ حَكِيمٍ يَقْرَأُ سُورَةَ الْفُرْقَانِ عَلَى غَيْرِ مَا أَقْرَؤُهَا وَكَانَ رَسُولُ اللهِ ﷺ أَقْرَأَنِيهَا فَكِدْتُ أَعْجَلُ عَلَيْهِ ثُمَّ أَمْهَلْتُهُ حَتَّى انْصَرَفَ ثُمَّ لَبَبْتُهُ بِرِدَائِهِ فَجِئْتُ بِهِ رَسُولَ اللهِ ﷺ فَقُلْتُ يَا رَسُولَ اللهِ «إِنِّي سَمِعْتُ هَذَا يَقْرَأُ سُورَةَ الْفُرْقَانِ عَلَى غَيْرِ مَا أَقْرَأْتَنِيهَا» فَقَالَ لَهُ رَسُولُ اللهِ ﷺ «اقْرَأْ» فَقَرَأَ الْقِرَاءَةَ الَّتِي سَمِعْتُهُ يَقْرَأُ فَقَالَ رَسُولُ اللهِ ﷺ «هَكَذَا أُنْزِلَتْ» ثُمَّ قَالَ لِي «اقْرَأْ» فَقَرَأْتُ فَقَالَ «هَكَذَا أُنْزِلَتْ إِنَّ هَذَا الْقُرْآنَ أُنْزِلَ عَلَى سَبْعَةِ أَحْرُفٍ فَاقْرَءُوا مَا تَيَسَّرَ مِنْهُ»  

[Machine] "What has been troubling me since I converted is that I read a verse and then a man reads it differently than I did. So I said, 'Read it to me, O Messenger of Allah.' He said, 'Read it to me, O Prophet of Allah.' So we went to the Messenger of Allah and I said, 'You read me a verse like this and like that.' The Messenger of Allah said, 'Yes.' The man said, 'You read me a verse like this and like that.' The Messenger of Allah said, 'Yes.' The Messenger of Allah said, 'Indeed, Jibril and Mika'il (peace be upon them) came to me. Jibril came and sat on my right side, and Mika'il sat on my left side.' Jibril said, 'Recite the Quran slowly.' Mika'il said, 'Increase it.' So I said, 'Increase it, and it increased.' Jibril said, 'Recite the Quran with two letters.' Mika'il said, 'Increase it.' So I said, 'Increase it.' Jibril said, 'Recite the Quran with three letters.' Mika'il said, 'Increase it.' So he said, 'Recite the Quran with seven letters, all of which are rich and complete.'"  

«مَا حَاكَ فِي صَدْرِي مُنْذُ أَسْلَمْتُ إِلَّا أَنِّي قَرَأْتُ آيَةً فَقَرَأَهَا رَجُلٌ عَلَى غَيْرِ قِرَاءَتِي» فَقَالَ أَقْرَأَنِيهَا رَسُولُ اللهِ ﷺ هَكَذَا فَقُلْتُ أَقْرَأَنِي النَّبِيُّ ﷺ هَكَذَا فَأَتَيْنَا رَسُولَ اللهِ ﷺ فَقُلْتُ أَقْرَأْتَنِي آيَةَ كَذَا وَكَذَا فَقَالَ رَسُولُ اللهِ ﷺ «نَعَمْ» فَقَالَ الرَّجُلُ أَقْرَأْتَنِي آيَةَ كَذَا وَكَذَا فَقَالَ رَسُولُ اللهِ ﷺ «نَعَمْ» فَقَالَ رَسُولُ اللهِ ﷺ «إِنَّ جِبْرِيلَ وَمِيكَائِيلَ عَلَيْهِمَا السَّلَامُ أَتَيَانِي فَعَمَدَ جِبْرِيلُ فَقَعَدَ عَنْ يَمِينِي وَقَعَدَ مِيكَائِيلُ عَنْ شِمَالِي» فَقَالَ جِبْرِيلُ اقْرَأْ الْقُرْآنَ عَلَى حَرْفٍ فَقَالَ مِيكَائِيلُ اسْتَزِدْهُ فَقُلْتُ «زِدْنِي فَزَادَنِي» فَقَالَ جِبْرِيلُ «اقْرَأِ الْقُرْآنَ عَلَى حَرْفَيْنِ» فَقَالَ مِيكَائِيلُ «اسْتَزِدْهُ» فَقُلْتُ «زِدْنِي» فَقَالَ جِبْرِيلُ «اقْرَأِ الْقُرْآنَ عَلَى ثَلَاثَةِ أَحْرُفٍ حَتَّى بَلَغَ عَلَى سَبْعَةِ أَحْرُفٍ» فَقَالَ مِيكَائِيلُ «اسْتَزِدْهُ» فَقَالَ «اقْرَأِ الْقُرْآنَ عَلَى سَبْعَةِ أَحْرُفٍ كُلُّهَا شَافٍ كَافٍ»