Yes .. His ghostwriter is MF Grimm.

As from http://en.wikipedia.org/wiki/GM_Grimm

GM Grimm penned much of lyrics for Dr. Dre's The Chronic album and was originally meant to be featured on Main Source's "Live at the Barbecue" track, which holds the distinction as being Nas's first major appearance on record.

HUMM..I DIDNT think so
well weird

the meaning of penned off of dictionary.com...link http://dictionary.reference.com/browse/penned

tr.v. penned, pen·ning, pens
To write or compose with or as if with a pen


so next time know what ur talkin about first before posting something like this.....

nah..

jay-z was rumored to write for him. and rakim when he was signed to aftermath