Indeed, We have put shackles on their necks, and they are to their chins, so they are with heads [kept] aloft.
This ayah STRUCK me because I was thinking of whenever I'm sitting in the front row at jumah, then I have to look up at the khateeb on the pulpit, and it always hurts my neck muscles. So it must be really hard to do that, especially since there's barriers around him too, so he cant bend to look in front of him or behind him. So...yeah.
