Marriage

The Prophet (may Allah's peace and blessings be upon him) stayed for three nights between Khaybar and Madīnah when he married Safiyyah

The Messenger of Allah (may Allah's peace and blessings be upon him) did not give preference to one of us over the other in terms of his division of the time he spent with us. Every day, except rarely, he used to visit all of us. He would come near each of his wives without having sexual intercourse with her, until he would reach the one whose turn was on that day and he would, thus, stay with her overnight

We received a letter from ‘Umar ibn al-Khattāb one year before his death. He said: Cancel every marriage between unmarriageable relatives from among the Magians

It is a Sunnah for a man who marries a virgin when he already has a wife (who is no longer a virgin) that he stay seven nights with the new wife and then divide his overnight stay between both. If he marries a previously-married woman when he already has a wife (either a virgin or not), the Sunnah is for him to stay with her (the new wife) three nights and then divide his overnight stay between both