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suyuti:2-176bZiyād b. Ḥudrah > Qāl ʿUmar b. al-Khaṭṭāb Hal Taʿrif Mā Yahdim al-Islām Qult Lā
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السيوطي:٢-١٧٦b

"عَنْ زِيَادِ بْنِ حُدْرَةَ قَالَ: قَالَ عُمَرُ بْنُ الخَطَّابِ: هَلْ تَعْرِفُ مَا يَهدِمُ الإِسْلَامَ؟ قُلْتُ: لَا، قَالَ: يَهْدِمُهُ زَلَّةُ العَالِم، وَجِدَالُ الْمُنافِقِ بِالكِتَابِ، وَحُكْمُ الأَئِمَّةِ المُضِلَّين".  

الدارمى

See similar narrations below:

Collected by Dārimī
darimi:220Muḥammad b. ʿUyaynah > ʿAlī > Ibn Mushir > Abū Isḥāq > al-Shaʿbī > Ziyād b. Ḥudayr > Qāl Lī ʿUmar Hal Taʿrif Mā Yahdim al-Islām > Qult Lā

[Machine] For me, Omar said: "Do you know what destroys Islam?" I said, "No." He said, "It is destroyed by the slip of a knowledgeable person, the arguments of a hypocrite with the Book, and the judgments of misguided leaders."  

الدارمي:٢٢٠أَخْبَرَنَا مُحَمَّدُ بْنُ عُيَيْنَةَ أَنبَأَنَا عَلِيٌّ هُوَ ابْنُ مُسْهِرٍ عَنْ أَبِي إِسْحَاقَ عَنِ الشَّعْبِيِّ عَنْ زِيَادِ بْنِ حُدَيْرٍ قَالَ قَالَ

لِي عُمَرُ «هَلْ تَعْرِفُ مَا يَهْدِمُ الْإِسْلَامَ؟» قَالَ قُلْتُ لَا قَالَ «يَهْدِمُهُ زَلَّةُ الْعَالِمِ وَجِدَالُ الْمُنَافِقِ بِالْكِتَابِ وَحُكْمُ الْأَئِمَّةِ الْمُضِلِّينَ»