Do you not see those who were advised against secret discussions: Yet (they) go back to that which they were asked not to do, and they hold secret discussions among themselves for injustice and hostility, and disobedience to the Messenger. And when they come to you, they greet and salute you, not as Allah salutes you, (but in crooked ways): And they say to themselves: "Why does Allah not punish us for our words?" Enough for them is Hell: In it they burn, and evil is that place to go!