Riyad as-Salihin 1625
Jarir bin 'Abdullah (May Allah be pleased with him) said:
I asked the Messenger of Allah (ﷺ) about (the Islamic ruling on) accidental glance (i.e., at a woman one is not Islamically allowed to look at) and he ordered me to turn my eyes away. [Muslim] .
وعن جرير رضي الله عنه قال‏:‏ سألت رسول الله صلى الله عليه وسلم  عن نظر الفجأة فقال‏:‏ ‏
"‏اصرف بصرك‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏