Hadithcore
Sahih Muslim, 1463 a
sahih

'A'isha (Allah be pleased with her) reported:

Never did I find any woman more loving to me than Sauda bint Zam'a. I wished I could be exactly like her who was passionate. As she became old, she had made over her day (which she had to spend) with Allah's Messenger (ﷺ) to 'A'isha. She said: I have made over my day with you to 'A'isha. So Allah's Messenger (ﷺ) allotted two days to 'A'isha, her own day (when it was her turn) and that of Sauda.

حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا جَرِيرٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ مَا رَأَيْتُ امْرَأَةً أَحَبَّ إِلَىَّ أَنْ أَكُونَ فِي مِسْلاَخِهَا مِنْ سَوْدَةَ بِنْتِ زَمْعَةَ مِنِ امْرَأَةٍ فِيهَا حِدَّةٌ قَالَتْ فَلَمَّا كَبِرَتْ جَعَلَتْ يَوْمَهَا مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم لِعَائِشَةَ قَالَتْ يَا رَسُولَ اللَّهِ قَدْ جَعَلْتُ يَوْمِي مِنْكَ لِعَائِشَةَ ‏.‏ فَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَقْسِمُ لِعَائِشَةَ يَوْمَيْنِ يَوْمَهَا وَيَوْمَ سَوْدَةَ ‏.‏

References2 variants
In-Book Reference
Book 17, Hadith 62
USC-MSA web (English) reference
Book 8, Hadith 3451 (deprecated numbering scheme)
Sharh · explanationclick to expand
The Mother of the Believers Sawdah bint Zam‘ah, wife of the Prophet (may Allah's peace and blessings be upon him) was one of the ascetic and devout worshippers. The Prophet's wives acknowledged each other's merits and were quite aware of what distinguished each one of them from the others. In this Hadīth, ‘Ā’ishah (may Allah be pleased with her) reports that she never wished or liked to be like any of the Prophet's wives or in her place except for Sawdah bint Zam‘ah, as she wished and loved to be like her in worship and obedience, and in her manner and conduct. "Mislākh": skin, and it means: that I become her in terms of the qualities that she admired about her. Her saying: "She was a woman characterized by sharpness" is a way of describing Sawdah, not criticizing her. She meant by that to highlight her strength and solidity in challenging situations. When Sawdah grew old, she granted her day with the Messenger of Allah (may Allah's peace and blessings be upon him) to ‘Ā’ishah. Sawdah (may Allah be pleased with her) did this out of her sagacity, as she gave her day to the woman who loved the Prophet (may Allah's peace and blessings be upon him) most. So, ‘Ā’ishah (may Allah be pleased with her) had two days with the Messenger of Allah (may Allah's peace and blessings be upon him): her day and Sawdah's day. This does not mean that they were two days in a row; rather, what is meant is clarifying the number of ‘Ā’ishah's days with the Messenger of Allah (may Allah's peace and blessings be upon him) in each of his rounds with his wives (may Allah be pleased with them). The Hadīth points out that Ghibtah (envy free from malice) is in goodness, and it means one's wish to be like another in his praiseworthy qualities. It also clarifies how the Prophet's wives loved him and sought to please him, and it guides the wives to seek to please her husband by doing what he likes..