Allah [swt] is the Light of the heavens and the earth. The parable of His Light is as [if there were] a niche and within it a lamp: the lamp is in a glass, the glass as it were a brilliant star, lit from a blessed tree, an olive, neither of the east nor of the west, whose oil would almost glow forth though no fire touched it. Light upon Light! Allah [swt] guides to His Light whom He wills. And Allah [swt] sets forth parables for mankind and Allah [swt] is All-Knower of everything.
O you who believe! Let your 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 the morning prayer and while you put off your clothes for the noonday [rest] and after the 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 to each other. Thus Allah [swt] makes clear the verses to you. And Allah [swt] is All-Knowing, All-Wise.
And when the children among you come to puberty then let them [also] ask for permission as those senior to them [in age]. Thus Allah [swt] makes clear His commandments and legal obligations for you. And Allah [swt] is All-Knowing, All-Wise.