Bismillahir Rahmaanir Raheem
"Beneficial knowledge is such knowledge which endows the man of knowledge with
humility after the elimination of pride;
With Solitude after association;
and with abstinence (Zuhd) after desire.
The knowledge which brings pride after humility,
and fame after obscurity is the type of knowledge from which Rasulullah (Sallallaahu 'alayhi wasallam)
sought Allah Ta'ala's Protection.
He said: O Allah, I seek protection from knowledge which is not beneficial."