During menstruation women undergo both physical and emotional changes and may not be ready for rituals that required concentration and strength for execution. Women in the ancient times used to do a lot work that required a ritual to be completed. This custom was to ensure that women under menstruation are given rest during rituals. Over time this has been misinterpreted by many that women under menstruation are to stay away from rituals since it brings ill effects to the ritual.
Why Women Staying away from rituals during menstrual cycle?