Reference: Shaykh Ibn ‘Uthaymeen – Kitaabul-‘Ilm
With reference to the important virtues of knowledge, the Shaykh (rahima-hullaah) mentions:
That he who has knowledge does not become tired in protecting it.
This is because, if Allaah bestows knowledge upon you, then its place is in the heart and there is no need for containers or keys or the like.
It is protected in the heart and soul, and in time itself it is a protector for you, because it protects you from danger, with Allaah’s permission.
So knowledge protects you, whilst with property, you protect it by placing it in locked up containers, and despite all this, you still remain insecure about it.