Safiyyah bint Huyai (May Allah be pleased with her), the Mother of the Believers, said

I came to visit the Prophet (ﷺ) while he was in the state of I'tikaf [(seclusion) in the mosque during the last ten days of Ramadan]. After having talked to him, I got up to return. The Prophet (ﷺ) also got up with me and accompanied me a part of the way. At that moment two Ansari man passed by. When they saw him they quickened their pace. The Prophet (ﷺ) said to them, "Do not hurry. She is Safiyyah, daughter of Huyai, my wife." They said: "Subhan Allah (Allah is free from imperfection)! O Messenger of Allah ! (You are far away from any suspicion)." The Messenger of Allah (ﷺ) said, "Satan circulates in a person like blood (in the blood streams). I apprehended lest Satan should drop some evil thoughts in your minds."

[Al-Bukhari and Muslim].