Abu as-Sa'ib, the freed slaved of Hisham b. Zuhra, said that he visited Abu Sa'id Khudri in his house, (and he further) said:I found him saying his prayer, so I sat down waiting for him to finish his prayer when I heard a stir in the bundles (of wood) lying in a comer of the house. I looked towards it and found a snake. I jumped up in order to kill it, but he (Abu Sa'id Khudri) made a gesture that I should sit down. So I sat down and as he finished (the prayer) he pointed to a room in the house and said: Do you see this room? I said: Yes. He said: There was a young man amongst us who had been newly wedded. We went with Allah's Messenger (ﷺ) (to participate in the Battle) of Trench when a young man in the midday used to seek permission from Allah's Messenger (ﷺ) to return to his family. One day he sought permission from him and Allah's Messenger (ﷺ) (after granting him the permission) said to him: Carry your weapons with you for I fear the tribe of Quraiza (may harm you). The man carried the weapons and then came back and found his wife standing between the two doors. He bent towards her smitten by jealousy and made a dash towards her with a spear in order to stab her. She said: Keep your spear away and enter the house until you see that which has made me come out. He entered and found a big snake coiled on the bedding. He darted with the spear and pierced it and then went out having fixed it in the house, but the snake quivered and attacked him and no one knew which of them died first, the snake or the young man. We came to Allah's Apostle (ﷺ) and made a mention to him and said: Supplicate to Allah that that (man) may be brought back to life. Thereupon he said: Ask forgiveness for your companion and then said: There are in Medina jinns who have accepted Islam, so when you see any one of them, pronounce a warning to it for three days, and if they appear before you after that, then kill it for that is a devil