It is narrated from the noble wife of the Prophet ﷺ, Sayyidah Aisha (may Allah be pleased with her), she said: When the Prophet ﷺ intended to travel, he would draw lots among his wives. Whosever name was drawn, he would take her with him (on the journey).
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1112
Hadith Takhrijأخرجه البخاري، الشهادات ، باب تعديل النساء بعضهن بعضا (2661) - ومسلم، التوبة، في حديث الإفك وقبول توبة القاذف (2770)۔