Getting niggas knocked
So hold your stash 'til the coke price drop

from Nas – N.Y. State of Mind Lyrics 1 on Rap Genius

Since the snitch is getting a lot of drug dealers “knocked” (slang for “arrested”), now is not a good time to be spending your “stash” of money on drug purchases.

1: You could get in trouble

and

2: You’ll get more favorable prices if you wait for the market to adjust

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