Dipped attache, jump out the Range

from Nas – The Message Lyrics on Rap Genius

Meaning

He’s referencing a 1995 Range Rover

Dipped (verb) has two meanings:
1. Put or let something down quickly or briefly in or into (liquid).
2. Put a hand or tool into (a bag or container) in order to take something out.

Nas is in-fact jumping out the 95' Range Rover looking fresh, but before he dips out he makes sure to stash his “goods” (aka guns, ammo, cigars, ect.) in his bag/briefcase (as he referred to as his “attache”) beforehand.

This is probably similar to the attache Nas got:

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