of course we can the knowledge holy prophet asws is saying is a lost treasure for the believers - we take the knowledge but we don't take the lifestyle we don't take the deen - this is something else and the knowledge that we take too, it's not that anyone can take anything and apply it and put it in their lives - there is always a sift - there is always a filter - there is always the khilafat - the alims, ulemas, awliya that are going to filter everything anything dirty, even if it's knowledge, if it's dirty take it out.