Shackles

These are the ones who bear shackles upon their necks

13:5And if thou wonderest, then wondrous is their saying: When we are dust, are we then forsooth (to be raised) in a new creation? Such are they who disbelieve in their Lord; such have carcans on their necks; such are rightful owners of the Fire, they will abide therein.

34:33Those who were despised say unto those who were proud: Nay but (it was your) scheming night and day, when ye commanded us to disbelieve in Allah and set up rivals unto Him. And they are filled with remorse when they behold the doom; and We place carcans on the necks of those who disbelieved. Are they requited aught save what they used to do?

40:71When carcans are about their necks and chains. They are dragged

73:12Lo! with Us are heavy fetters and a raging fire,