I put the name on the map after Marley and Shan

from Nas – Destroy and Rebuild Lyrics on Rap Genius

Meaning

After the legendary Queensbridge natives Marley Marl and MC Shan of the Juice Crew put it down for their Borough, Nas was the next representative for Queensbridge.
He compares his skill to theirs, and one can infer he is stating the belief that he will be just as monumental to Queensbridge music (which ended up being oh so true).

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