"Al Hafiz Ibn Hajar comments on the Quranic verse '...And say, My Lord, increase me in knowledge,' is a clear indication of the merit and excellence of knowledge, for Allah never commanded His Prophet (peace be upon him) to invoke Him for more of anything other than knowledge...
...There is no doubt that before one starts doing something one should know how to perform it in the best way, so as to perform it well to harvest its desired fruits. Likewise, it is by no means reasonable that one starts worshipping one's Lord, the way through which one's salvation from Hellfire and admittance to Paradise are gaines without knowledge." [Summary of Islamic Jurisprudence, (1/2-3).