Can someone tell me what song this artist sampled?

From 0 to 0:55 that beat used i have 100% for sure heard it before i just know it. but i can't remember :s , anyone know where its from?

 

Wiki has nothing:

https://en.wikipedia.org/wiki/Work_(Iggy_Azalea_song)

Neither does whosampled.com

http://www.whosampled.com/artist/Iggy Azalea/

 

Thanks for going through work to actually find out for me, props bro.

but i KNOW i have heard the beat somwhere before :/ not even a rap song i just know i have heard it before :s just can't remember at all where

 

Can someone pleeease tell me the name of this song -.- like the sample they used in the start