From Sahih Bukhari (Hadith 2688):
Narrated Aisha:Whenever Allah's Messenger (ﷺ) intended to go on a journey, he used to draw lots among his wives and would take with him the one on whom the lot fell. He also used to fix for everyone of his wives a day and a night, but Sauda bint Zam`a gave her day and night to `Aisha, the wife of the Prophet (ﷺ) intending thereby to please Allah's Messenger (ﷺ)
Reference: Bukhari 2688