There will be a barrier between Paradise and Hell. And on the heights ˹of that barrier˺ will be people who will recognize ˹the residents of˺ both by their appearance. They will call out to the residents of Paradise, “Peace be upon you!” They will have not yet entered Paradise, but eagerly hope to.
Meaning:-
Barrier: gate preventing people entering place, as a railing, fence, wall, that stops people from going somewhere, a limit or boundary of any kind.