they ask you concerning menstruation. say that is an adha therefore keep away from women during menses and go not in unto them till they are purified. and when they have purified themselves then go in unto them as allah has ordained for you. truly allah loves those who turn unto him in repentance and loves those who purify 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