An-Nur 24:58 يا ايها الذين امنوا ليستاذنكم الذين ملكت ايمانكم والذين لم يبلغوا الحلم منكم ثلاث مرات من قبل صلاة الفجر وحين تضعون ثيابكم من الظهيرة ومن بعد صلاة العشاء ثلاث عورات لكم ليس عليكم ولا عليهم جناح بعدهن طوافون عليكم بعضكم على بعض كذالك يبين الله لكم الايات والله عليم حكيم ٥٨

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 Fajr (morning) Salât (prayer), and while you put off your clothes for the noonday (rest), and after the ‘Ishâ’ (late-night) Salât (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 Allâh makes clear the Ayât (the Verses of this Qur’ân, showing proofs for the legal aspects of permission for visits) to you. And Allâh is All-Knowing, All-Wise.