عَنْ أَبِي مُوسَى الْأَشْعَرِيِّ رَضِيَ اللَّهُ عَنْهُ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «تَعَاهَدُوا الْقُرْآنَ فَوَالَّذِي نَفْسِي بِيَدِهِ لَهْوَ أَشَدُّ تَفَصِّيًا مِنَ الْإِبِلِ فِي عُقُلِهَا»
Abu Musa al-Ashari reported God’s messenger as saying, “Keep refreshing your knowledge of the Qur’an, for I swear by Him in whose hand my soul is that it is more liable to escape than camels which are tethered.” (Bukhari and Muslim.)
Mishkat al-Masabih 2091, Book 9, The Excellent Qualities of the Qur'an, Hadith 77. 1 min read