Does anyone know from what band this is sampled? (cocaine)

The word is.... (cheering in background) the word is cocaine (crowd goes off) what's the word (crowd replies COCAINE!) you got the job....

'Cocaine' live version of Nazareth in the "Snaz" album (1981).
 
thank you so much!!! was searchin this one for 15 years!!

You're welcome.

Was my first Nazareth album, so I'm quite intimate with it :D

Actually the version you put above comes as a bonus track in "The Fool Circle". The sampler you want is from "Snaz" and starts at the end of track 7 ('Java Blues'), and goes (roughly):

Hey listen, do you guys sing?
Can the rest of you guys sing?
All I want you to do, is sing one word for me now.
*whistles*
And the word is...shhhh, the word is cocaine.
*screams*
What's the word?
*COCAINE*
You've got the job.

and track 8 ('Cocaine' ) starts.