The word(s) "interior" appears 2 time(s) in 2 verse(s) in Quran in Saheeh International translation.

(1) Allah has not made for a man two hearts in his interior. And He has not made your wives whom you declare unlawful your mothers. And he has not made your adopted sons your [true] sons. That is [merely] your saying by your mouths, but Allah says the truth, and He guides to the [right] way.

(2) On the [same] Day the hypocrite men and hypocrite women will say to those who believed, "Wait for us that we may acquire some of your light." It will be said, "Go back behind you and seek light." And a wall will be placed between them with a door, its interior containing mercy, but on the outside of it is torment.