وعن سهل بن سعد
قال: قال رسول الله صلى الله عليه وسلم: «إنما جعل الاستئذان من أجل البصر»
The Messenger of Allah (sallallahu alayhi wa sallam) said, “Seeking permission to enter (somebody’s house) has been prescribed in order to restrain the eyes (from looking at something we are not supposed to look at).”.