Musnad Abu Ya'la al-Mawsili 134:6

'Uqbah ibn Mukram narrated to us, Yunus ibn Bukayr narrated to us, he said: Sulayman al-A'mash, I heard him mentioning from Anas, attributing it to the Prophet (ﷺ), that he said: "If a man marries a woman, if she is a virgin, he stays with her for seven [days], and if she is previously married, he stays with her for three [days], then he divides [his time] after that."