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أَخْبَرَنَا مُحَمَّدُ بْنُ كَثِيرٍ عَنْ الْأَوْزَاعِيِّ عَنْ حَسَّانَ قَالَ كَانَ جِبْرِيلُ يَنْزِلُ عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِالسُّنَّةِ كَمَا يَنْزِلُ عَلَيْهِ بِالْقُرْآنِ

Narrated to us [Muhammad bin Katsir] from [Al 'Auza'i] from [Hassan] he said: "Jibril 'alaihissalam came down to meet the Prophet Peace be upon him conveying the sunnah as he came down to convey the Qur'an".