Shaikh Uthaymeen [rahimahullaah] said,

“O student of knowledge! Seek knowledge. And be not like some people who have [nothing], except a collection of books; he memorises and understands a lot, but acts very little. So, be a seeker of knowledge, one who acts [and] a caller to truth. Therefore, [it should be] three affairs: Firstly, to be truthful in pursuit of knowledge. Secondly, act upon it. Thirdly, call to it.”


Sharh Hilyati Taalibil Ilm’ page 327