The hip-hop star, whose civil contempt charge was recently dismissed, has said that he cannot afford the monthly pay-out recently ordered by the court, according to TMZ.
Nas was ordered to pay more than $87,000 (£68,000) in unpaid spousal and child support. The judge also ordered Nas to pay Kelis $10,000 (£7,000) a month in spousal support to stay up to date.
Nas is allegedly earning $152,031 (£120,000) a month but has insisted that he makes "substantially less than that amount."
Earlier this week, it was reported that Nas will narrate a documentary about the Liberian National Amputee soccer team.