A man peeked into one of the chambers of the Prophet ﷺ, so the Prophet ﷺ got up and went toward him with an arrowhead, or arrowheads, in his hand. It is as though I can still see the Messenger of Allah ﷺ stealthily approaching the man to stab him.
أن رجلا اطلع من بعض حجر النبي ﷺ، فقام إليه بمشقص أو مشاقص، فكأني أنظر إلى رسول الله ﷺ يختل الرجل ليطعنه.
Bukhari narrated it in the Book of Seeking Permission (6242), and Muslim in the Book of Manners (42:2157), both through chains from Hammad bin Zayd, from Ubaydullah bin Abu Bakr, from Anas bin Malik, who related it. Ahmad also narrated it (12985) through another route from Anas, that the Messenger of Allah ﷺ was standing praying in his house, when a man came and peered into his house, so the Messenger of Allah ﷺ took an arrow from his quiver and aimed it toward the man's eye until he left. Its chain of transmission is sahih.