Number 10: a strong word called "consignment"
Strictly for live men, not for freshmen
If you ain't got the clientele, say "hell no!"

from The Notorious B.I.G. – Ten Crack Commandments Lyrics on Rap Genius

Meaning

This sound business advice — the flipside of the “inventory” advice in Rule 8 — recommends conservative leverage: if you don’t have a sufficient client base to sell to, don’t take crack on consignment!

As Shakespeare advised,

Neither a borrower nor a lender be

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