"When a hypocrite begins disbelieving, the light is taken from him, and he is not able to see that he is actually a disbeliever. It is like someone wandering around in darkness but claiming that he sees his way, while the person in the light, looking on the dark, knows that he is not able to see his way around.
The Prophet is warned to strive hard against the hypocrites and disbelievers and be unyielding to them, for their abode is the "Fire of Hell." The relation between the hypocrites and the believers is cut off. They are not allowed to go around the Muslims. Not even charity is accepted from hypocrites by the believers. They seek friendship with the enemies of Islam. Read Chapter 5, Verse 53 (Holy Qur'an), and also Chapter 4 verses 144 and 145. There is no help for the hypocrites. They practice deceit. Read Chapter 47, Verse 23, and also verses 25 through 28.
This particular group (hypocrites) should always be watched by the believers. They are very deceitful and must be opposed by all means. They are not to be killed, for Allah desires to make them examples for others by chastising them like a parent does a child. He chastises one with the strap to warn the other not to disobey. After a divine chastisement of the hypocrites, they are turned into the doom of the real enemies (the devils). That is why the Holy Qur'an speaks of them as inmates of the "Fire of Hell."