Abdullah ibn Amr (r.a) narrated that the Rasul (s.a.w) said: "Allah will not snatch away knowledge abruptly from people, but rather He will snatch knowledge by removing scholars. This will happen to the extent that when no scholar remains, people will take ignorant leaders as their guides. These leaders will be asked and they will give opinions (Fatawas) without knowledge. So they will be misguided and they will misguide." (Bukhari & Muslim)