Um Sulaym said: O Messenger of Allah, a woman dreams of her husband having intercourse with her. Does she have to bathe? He said: Yes, if she feels wetness. So, Um Salamah said: Do women experience that? He said: Of course they do -silly-. How else does the resemblance with maternal cousins come from? Whichever of the two -parental/maternal- discharges reaches the womb first, it predominates the resemblance.