Popular Nigerian Rapper, M.I Abaga, and his record label, Chocolate City, are suing American hip-hop Star, Nas, for breach of contract.

In the lawsuit which was filed in the New York Supreme Court, MI claimed that he and his record label entered an agreement with Nas and his partner, Ronnie Goodman in 2013, to contribute a verse to a track from M.I but the American musicians did not deliver on it after a payment of $50,000 had been made.

In the agreement, Nas was supposed to mention “M.I, Chocolate City, Nigeria, Queens, New York – NAS’s hometown, Mandela, Trayvon Martin, and the struggles of Africans and African Americans” in his verse. Nas delivered the track but reportedly did not mention any of the subject matter Chocolate City had asked for.

Chocolate City then asked Nas to re-record the verse but he never did. It’s been over three years now and, even though Nas accepted the payment, he still has not delivered on the verse, hence the lawsuit.

In the lawsuit, Chocolate City referred to Nas as “a highly respected lyricist in the music industry” and they wanted a verse from him “because of NAS’s exceptional talent as a lyric writer.”