Nas has insisted that he has no beef with Doja Cat following the release of his recent single ‘Ultra Black’.On the track, which is a collaboration with Hit-Boy, the rapper appeared to diss the ‘Say So’ star with the lyric: “Sometimes I’m over-black, even my clothes are black/Cash Money with the white tee and the soldier rag / We goin’ ultra black, unapologetically black / The opposite of Doja Cat, Michael Blackson black“.She has since shrugged the diss off and poked fun at the track by posting