Nas is still fighting to keep his money from ending up in the pockets of ex-wife Kelis.

According to, Nas' lawyer, Marc Vincent Kaplan, filed legal papers requesting the judge bar his ex from receiving the $72,728 a month in spousal support she has requested. Additionally, the Queensbridge rapper is seeking joint custody of their infant son Knight.

As previously reported, Nas was ordered to pay Kelis $44,000 in child and spousal support plus her legal fees. Kelis' lawyer Laura Wasser filed a motion to increase the payments based on Nas' monthly income of $240,000. But Kelis didn't stop there; she also asked for more than $400,000 in additional support.

While pregnant, Kelis argued that she was totally dependent on her Nas' financial support as she was not able to work. A judge ordered Nas to foot the bill for her monthly mortgage payments, prenatal expenses and medical insurance.

The couple split in April, citing irreconcilable differences. When they were spotted together recently in a New York City nightclub, it sparked rumors of a reconciliation, but that is clearly not the case.

These days Nas can't seem to catch a break, at least financially. Last month the IRS filed a lien against him for tax payments totaling $2,584,206.31 stemming from unpaid taxes in both 2006 and 2007.