Let your legal slaves and slave-girls , and those among you who have not come to the age of puberty ask your permission ( before they come to your presence ) on three occasions ; before Fajr ( morning ) prayer , and while you put off your clothes for the noonday ( rest ) , and after the ' Isha ' ( late-night ) prayer . ( These ) three times are of privacy for you , other than these times there is no sin on you or on them to move about , attending ( helping ) you each other .