How long a virgin and a previously-married woman are entitled to have the husband stay with them after marriage Sahih Muslim 1461 b
Translation
Abu Qilaba reported on the authority of Anas
It is the Sunnah to stay with a virgin (after having married her) for a week. Khalid (one of the narrators) said: If wish I can say that it can be traced up to the Prophet (ﷺ).