How was Suge able to use the Fuck You - Dr Dre sample?

[Soopafly DPGC]

I'm far from an expert in the legalities of the music business, but how was Suge able to use Dr Dre's song FUCK YOU as an intro to the song FUCK DRE from Too Gangsta For Radio album?  You would think there's no way in hell Dre would've cleared that sample, especially considering the skit during the sample is Dre and Mel Man having a gay encounter.  And this is much more than a sample, the song plays in the background for a good 30 seconds or so. 

Part of me thinks Suge just did it and Dre's motto was always to ignore whatever Suge was doing...but i would think the publishing from Devon The Dude and Interscope or someone else affiliated with the publishing rights to that song would've stepped in and prevented it.