مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 465
Purification
Associating with one who is defiled, and what is permitted - Section 2
وَعَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرِ بْنِ مُحَمَّدِ بْنِ عَمْرِو بْنِ حَزْمٍ: أَنَّ فِي الْكِتَابِ الَّذِي كَتَبَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم لعَمْرو بن حزم: «أَن لَا يَمَسَّ الْقُرْآنَ إِلَّا طَاهِرٌ» . رَوَاهُ مَالِكٌ وَالدَّارَقُطْنِيُّ
‘Abdallah b. Abu Bakr b. Muhammad b. ‘Amr b. Hazm said that the letter sent by God's messenger to ‘Amr b. Hazm contained the words, “Only one who is pure must touch the Qur’an.” Malik and Daraqutni transmitted it.
Mishkat al-Masabih, 465لم تتمّ دراسته (الألباني)