Reference: Siyar A’laam an-Nubalaa – Volume 14, Page 523
Muhammad ibn ‘Abdillaah ar-Raazee said:
The disappearance of Islaam will be due to four [factors; that the people]:
1) they do not act according to what they know;
2) they act according to what they do not know;
3) they do not learn what they do not know;
4) they prevent the people from [seeking] knowledge.