they ask you about menstruation. say it is an injury. stay away from women during their menstrual periods and do not approach them until they are cleansed. when they have cleansed themselves then come to them from where allah has commanded you. allah loves those who turn to him in repentance and he loves those who cleanse themselves
ويسألونك عن المحيض قل هو أذى فاعتزلوا النساء في المحيض ولا تقربوهن حتى يطهرن فإذا تطهرن فأتوهن من حيث أمركم الله إن الله يحب التوابين ويحب المتطهرين