Sunan Ibn Majah, Volume 3, Book 9, Hadith 1970 (DarusSalam) ⓘ
It was narrated from 'Aishah: that whenever the Messenger of Allah was to travel, he would cast lots among his wives.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يَحْيَى بْنُ يَمَانٍ، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ كَانَ إِذَا سَافَرَ أَقْرَعَ بَيْنَ نِسَائِهِ .
also referenced under: Hadith 1970 (Reference) & Book 9, Hadith 2046 (In-Book)