SAmple ID

Usually i dont have to ask, cuz i know my music....But i cant figure out, nor can find any info on these 2 DJ Premier produced joints...1)Xzibit "what a Mess"(off the Man Vs Machine Bonus Disc---shoulda been on the album in place of 1of the many generic beats on that album--my opinion.... 2) Rakim "Waitin 4 the world to End" anyone happen to have any idea??

i guess i gotta ask about a break someone used on youtube or ask whats the original sample for the Drum Break in Mary J Bliges "real Love" LOL Or how bout whats th sampl;e from PUFF DADDY(DIDDY who?) and the"Pastors"-"Cant Nobody Hold Me down"