What sample did my homeboy use here, a matter of life and death people!

[Luka95]

One of the homies has been losing his mind for the past 7 years since he can't find the sample that he used here
If anyone could help him out that'd be really awesome
Here's the beat:
Zippyshare.com - F 2 Da A - Warm In Your Arms.mp3

He only knows that it has also been used on a Lupe Fiasco song called "Cold Out"

 

[redle]

Check out WhoSampled, if you haven't already.
Good luck, fam.