Came across me, how much it'a cost me
To get you out my business

from Kendrick Lamar (Ft. Mary J. Blige) – Now or Never Lyrics on Rap Genius

Meaning

Kendrick right now is a rising star. So, he doesn’t want anyone to come in his way because it might cost him his career.

Also, there is a nice play on words here involving cost and business.

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