It seems unable to be determined or confirmed.
http://bbs.beastieboys.com/showthread.php?t=100976
These Reddit threads keep referring back to one another, and someone posited it was a mix of several tracks including So Whatcha Want, BBoys…Freak Freak, and/or Here’s a Little Something For Ya.
https://www.reddit.com/r/BeastieBoys...e_boys_sample/
https://www.reddit.com/r/tvgirl/comm..._of_better_in/
https://www.reddit.com/r/tvgirl/comm... mf&context=3
I don’t hear any of those original songs in that track. If anything, my brain hears “say it” but I just happen to be in the camp of I don’t think it’s a Beastie Boys sample at all.