Full Idea
As for the unbelievers, they shall drink boiling water.
Gist of Idea
The unbelievers shall drink boiling water
Source
Mohammed (The Koran [c.622], Ch.10)
Book Reference
Mohammed: 'The Koran', ed/tr. Dawood,N.J. [Penguin 1968], p.63
A Reaction
This seems to be presented not only as a threat to unbelievers, but also as a satisfaction to believers.