Wisdom and knowledge are a light by which Allâh guides whomever He pleases; it does not consist in knowing many things
Imam Malik
Knowledge is what benefits. Knowledge is not what one has memorized
Imam Syafie
Knowledge (al-`ilm) is not the profusion of narration, but a light which Allâh casts into the heart. Its condition is followership (ittibâ`) and the flight away from egotism (hawâ) and innovation
Al-Dhahabî