Sunan Abi Dawud, Hadith 1447 ⓘ

'Uthman reported the Prophet as saying: The best among you is he who learns and teaches the Qur'an.

حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنْ عَلْقَمَةَ بْنِ مَرْثَدٍ، عَنْ سَعْدِ بْنِ عُبَيْدَةَ، عَنْ أَبِي عَبْدِ الرَّحْمَنِ، عَنْ عُثْمَانَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ خَيْرُكُمْ مَنْ تَعَلَّمَ الْقُرْآنَ وَعَلَّمَهُ ‏" ‏ ‏.‏

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Key Source: Historical Anachronisms

Verses in the Quran that show its human authorship

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also referenced under: Hadith 1452 (DarusSalam) & Book 8, Hadith 1447 (USC-MSA)