The word(s) "barrier" appears 7 time(s) in 6 verse(s) in Quran in Saheeh International translation.

(1) They said, "O Dhul-Qarnayn, indeed Gog and Magog are [great] corrupters in the land. So may we assign for you an expenditure that you might make between us and them a barrier?"

(2) That I might do righteousness in that which I left behind." No! It is only a word he is saying; and behind them is a barrier until the Day they are resurrected.

(3) And it is He who has released [simultaneously] the two seas, one fresh and sweet and one salty and bitter, and He placed between them a barrier and prohibiting partition.

(4) Is He [not best] who made the earth a stable ground and placed within it rivers and made for it firmly set mountains and placed between the two seas a barrier? Is there a deity with Allah? [No], but most of them do not know.

(5) And We have put before them a barrier and behind them a barrier and covered them, so they do not see.

(6) Between them is a barrier [so] neither of them transgresses.