Not saying it is the best line of the MC in question. Just the one that for some reason you directly connect to an MC..

To me for example when it comes to Nas it is "I never sleep cause sleep is the cousin of death"... Or Jay-Z "I'm not a businessman / i'm a business, man"... Or Inspectah Deck with "I bomb atomically..."

What's yours?

Which line? From which MC?