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- ʿAbd Allāh narrated to us; my father narrated to us; ʿAbd Allāh ibn Yazīd narrated to us. He said: I heard Ziyād Abū ʿUmar say: “It has reached me that Jesus son of Mary—peace be upon him—said: ‘It will not benefit you to learn what you do not yet know while you have not put into practice what you already know; for an overabundance of knowledge only increases arrogance when it is not acted upon.’”
٣٢٧ - حَدَّثَنَا عَبْدُ اللَّهِ، حَدَّثَنَا أبِي، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يَزِيدَ قَالَ: سَمِعْتُ زِيَادًا أَبَا عُمَرَ يَقُولُ: " بَلَغَنِي أَنَّ عِيسَى ابْنَ مَرْيَمَ قَالَ: إِنَّهُ لَيْسَ بِنَافِعِكَ أَنْ تَعْلَمَ، مَا لَمْ تَعْلَمْ، وَلَمَّا تَعْمَلْ بِمَا قَدْ عَلِمْتَ؛ إِنَّ كَثْرَةَ الْعِلْمِ لَا تَزِيدُ إِلَّا كِبْرًا إِذَا لَمْ تَعْمَلْ بِهِ "