Nas wants to spend more time with the eight-year-old boy he shares with his ex-wife Kelis.
The Hip Hop pair divorced in 2010 and Nas says that she's made it difficult to see his son Knight since then.
He labeled his ex as "hostile" in new court documents, in which he asks for custody of Knight the first, third, and fifth weekend each month, from Friday after school to Monday morning.
As it stands, Nas says Kelis controls when he can or can't see Knight.
The pair has been in and out of court since they split.