there is no harm in your eating together or separately. but when you enter the houses salute the inmates with a greeting in the name of god invoking blessings and good health. that is how god explains things to you clearly so that you may understand. they alone are true believers who believe in god and his apostle and when they are with him on a matter of common concern do not depart without obtaining his leave. surely those who ask leave of you are the ones who believe in god and his apostle. therefore when they ask leave of you for personal business give leave to those you please and seek gods forgiveness for them. surely god is forgiving and kind.
إنما المؤمنون الذين آمنوا بالله ورسوله وإذا كانوا معه على أمر جامع لم يذهبوا حتى يستأذنوه إن الذين يستأذنونك أولئك الذين يؤمنون بالله ورسوله فإذا استأذنوك لبعض شأنهم فأذن لمن شئت منهم واستغفر لهم الله إن الله غفور رحيم