It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that when the Prophet (peace and blessings be upon him) married her, he stayed with her for three days and said: "There is no disgrace upon you in the eyes of your family. If you wish, I will give you seven days, and if I give you seven days, I will give each of my other wives seven days as well."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19896