Verily, Allah does not take away knowledge by snatching it from the people; rather, He takes away knowledge with the death of the scholars until, when He leaves no scholar behind, the people turn to the ignorant as their leaders. They are asked, so they give religious judgments without knowledge; thus they are led astray and lead others astray. [ Muslim]

«إنَّ اللهَ لاَ يَقْبِضُ العِلْمَ انْتِزَاعاً يَنْتَزعهُ مِنَ النَّاسِ، وَلكِنْ يَقْبِضُ العِلْمَ بِقَبْضِ العُلَمَاءِ، حَتَّى إِذَا لَمْ يُبْقِ عَالِماً، اتَّخَذَ النَّاسُ رُؤُوساً جُهَّالاً، فَسُئِلُوا فَأفْتوا بِغَيْرِ عِلْمٍ، فَضَلُّوا وَأضَلُّوا». (مسلم)