He heard the Messenger of Allah ﷺ say, "If someone peers into your house without your permission and you throw a pebble at him and put out his eye, you have committed no offense."
وبإسناده لو اطلع في بيتك أحد ولم تأذن له خذفته بحصاة ففقأت عينه ما كان عليك من جناح