The Messenger of Allah ﷺ said, "The eyes commit fornication, the tongue commits fornication, the hands commit fornication, and the feet commit fornication. The private parts then confirm or deny it."
أن رسول الله ﷺ قال: العينان تزنيان، واللسان يزني، واليدان تزنيان، والرجلان تزنيان، ويحقق ذلك الفرج أو يكذبه.
Baghawi narrated it in Sharh al-Sunnah (76) from Abu Abdullah Harqi, from Abu Hasan Tayfuri, from Abdullah bin Umar Jawhari, from Ahmad bin Ali Kashmihani, from Ali bin Hajar, from Ismail bin Jafar, from Ala, from his father, from Abu Hurairah, and he mentioned it.Baghawi said, "This is a sahih hadith. Ala is Ala bin Abdul-Rahman bin Yaqub Harqi, the freed slave of Harqa, and Harqa is a branch of Juhayna. It is said that Ala died in the year one hundred and thirty-two."