Sunan Abi Dawud — Marriage (Kitab Al-Nikah) — Hadith No: 2122
Translation
Abd al-Malik b. Abi Bakr reported from his father on the authority of Umm Salamah:When the Messenger of Allah (ﷺ) married Umm Salamah, he stayed with her three night, and said: Your people (i.e. clan) are not being humbled for you in my estimation. If you wish I shall stay with you seven nights; and if I stay with you seven nights, I shall stay with my other wives seven nights