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

(1) So whoever Allah wants to guide - He expands his breast to [contain] Islam; and whoever He wants to misguide - He makes his breast tight and constricted as though he were climbing into the sky. Thus does Allah place defilement upon those who do not believe.

(2) And that my breast will tighten and my tongue will not be fluent, so send for Aaron.