O you who have believed, let those whom your right hands possess and those who have not [yet] reached puberty among you ask permission of you [before entering] at three times: before the dawn prayer and when you put aside your clothing [for rest] at noon and after the night prayer. [These are] three times of privacy for you. There is no blame upon you nor upon them beyond these [periods], for they continually circulate among you - some of you, among others. Thus does Allah make clear to you the verses; and Allah is Knowing and Wise.
And women of post-menstrual age who have no desire for marriage - there is no blame upon them for putting aside their outer garments [but] not displaying adornment. But to modestly refrain [from that] is better for them. And Allah is Hearing and Knowing.
There is not upon the blind [any] constraint nor upon the lame constraint nor upon the ill constraint nor upon yourselves when you eat from your [own] houses or the houses of your fathers or the houses of your mothers or the houses of your brothers or the houses of your sisters or the houses of your father's brothers or the houses of your father's sisters or the houses of your mother's brothers or the houses of your mother's sisters or [from houses] whose keys you possess or [from the house] of your friend. There is no blame upon you whether you eat together or separately. But when you enter houses, give greetings of peace upon each other - a greeting from Allah , blessed and good. Thus does Allah make clear to you the verses [of ordinance] that you may understand.
The believers are only those who believe in Allah and His Messenger and, when they are [meeting] with him for a matter of common interest, do not depart until they have asked his permission. Indeed, those who ask your permission, [O Muhammad] - those are the ones who believe in Allah and His Messenger. So when they ask your permission for something of their affairs, then give permission to whom you will among them and ask forgiveness for them of Allah . Indeed, Allah is Forgiving and Merciful.
Do not make [your] calling of the Messenger among yourselves as the call of one of you to another. Already Allah knows those of you who slip away, concealed by others. So let those beware who dissent from the Prophet's order, lest fitnah strike them or a painful punishment.
Unquestionably, to Allah belongs whatever is in the heavens and earth. Already He knows that upon which you [stand] and [knows] the Day when they will be returned to Him and He will inform them of what they have done. And Allah is Knowing of all things.