Whenever Messenger of Allah 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 Zamʿa gave her day and night to ʿAisha, the wife of the Prophet ﷺ intending thereby to please Messenger of Allah ﷺ.
كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَرَادَ سَفَرًا أَقْرَعَ بَيْنَ نِسَائِهِ فَأَيَّتُهُنَّ خَرَجَ سَهْمُهَا خَرَجَ بِهَا مَعَهُ وَكَانَ يَقْسِمُ لِكُلِّ امْرَأَةٍ مِنْهُنَّ يَوْمَهَا وَلَيْلَتَهَا غَيْرَ أَنَّ سَوْدَةَ بِنْتَ زَمْعَةَ وَهَبَتْ يَوْمَهَا وَلَيْلَتَهَا لِعَائِشَةَ زَوْجِ النَّبِيِّ ﷺ تَبْتَغِي بِذَلِكَ رِضَا رَسُولِ اللَّهِ ﷺ