It is narrated from Ibn Abbas (may Allah be pleased with them both) that when the Prophet (ﷺ) passed away, he had nine wives in his marriage, and he had assigned turns for eight of them.
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1109
Hadith Takhrijاخرجه البخاري، النكاح، باب كثرة النساء (5067) ومسلم ، الرضاع ، باب جواز هبتها نوبتها لضرتها (1465)۔
It is narrated from Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) departed from this world while he had nine wives in his marriage, and he had assigned turns for eight of them.
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1110
Hisham narrates from his father that Sawda (may Allah be pleased with her) gave her turn (day) to Aisha (may Allah be pleased with her) as a gift.
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1111
Hadith Takhrijاخرجه البخاري، الهبة وفضلها، باب هبة المرأة لغير زوجها، وعتقها اذا كان لها زوج فهو جائز ..... الخ (2593)، (5212) ومسلم، الرضاع، باب جواز هبتها نوبتها لضرتها (1463)۔