18 Jumada Al-Awwal 1421 A.H., August 18,2000
On the authority of Abu Hurairah (may Allah be pleased with him) who reported that Allah's Messenger (peace be upon him) said:
If one is questioned about knowledge (of religion) and conceals it, he will be bridled with a bridle of fire on the Day of Resurrection.
(Reported by Abu Dawud)
1. It is necessary to communicate knowledge, especially in matters related to religion.
2. Restricting knowledge is one of the grievous sins whose doer incurs dreadful punishment.