Hazrat Abu Ruh narrates that a woman imitated a man's slave-girl, and it was nighttime, so he had intercourse with her, thinking she was his slave-girl. Then this matter was presented before Hazrat Umar. So he sent a messenger to call Hazrat Ali (may Allah be pleased with him) and said: "Administer the prescribed punishment to the man in private, and to the woman administer the prescribed punishment openly."