The word(s) "barrier" appears 12 time(s) in 11 verse(s) in Quran in Mohsin Khan translation.

(1) And between them will be a (barrier) screen and on Al-A'raf (a wall with elevated places) will be men (whose good and evil deeds would be equal in scale), who would recognise all (of the Paradise and Hell people), by their marks (the dwellers of Paradise by their white faces and the dwellers of Hell by their black faces), they will call out to the dwellers of Paradise, "Salamun 'Alaikum" (Peace be on you), and at that time they (men on Al-A'raf) will not yet have entered it (Paradise), but they will hope to enter (it) with certainty.

(2) And (remember) the Day He will say: "Call those (so-called) partners of Mine whom you pretended." Then they will cry unto them, but they will not answer them, and We shall put a Maubiq (barrier) between them.

(3) They said: "O Dhul-Qarnain! Verily Ya'juj and Ma'juj (Gog and Magog) are doing great mischief in the land. Shall we then pay you a tribute in order that you might erect a barrier between us and them?"

(4) He said: "That (wealth, authority and power) in which my Lord had established me is better (than your tribute). So help me with strength (of men), I will erect between you and them a barrier.

(5) Until, when Ya'juj and Ma'juj (Gog and Magog) are let loose (from their barrier), and they swoop down from every mound.

(6) "So that I may do good in that which I have left behind!" No! It is but a word that he speaks; and behind them is Barzakh (a barrier) until the Day when they will be resurrected.

(7) And it is He Who has let free the two seas (kinds of water): this is palatable and sweet, and that is salt and bitter; and He has set a barrier and a complete partition between them.

(8) Is not He (better than your gods) Who has made the earth as a fixed abode, and has placed rivers in its midst, and has placed firm mountains therein, and has set a barrier between the two seas (of salt and sweet water)? Is there any ilah (god) with Allah? Nay, but most of them know not!

(9) And a barrier will be set between them and that which they desire [i.e. At-Taubah (turning to Allah in repentance) and the accepting of Faith], as was done in the past with the people of their kind. Verily, they have been in grave doubt.

(10) And We have put a barrier before them, and a barrier behind them, and We have covered them up, so that they cannot see.