He was extremely kind and fair towards his wives. If on occasion any one of them failed to comport herself with due deference towards him he merely smiled and passed the matter over. He said to A’isha(ra) one day: "A’isha(ra), whenever you are upset with me I always get to know it." A’isha(ra) enquired: "How is that?" He said: "I have noticed that when you are pleased with me and in the course of conversation you have to refer to God, you refer to Him as the Lord of Muhammad(sa). But if you are not pleased with me, you refer to Him as the Lord of Ibrahim(as)." At this A’isha(ra) laughed and said he was right (Bukhari, Kitabun Nikah).
Khadija(ra) was his first wife and had made great sacrifices in his cause. She was much older than the Prophet(sa). After her death he married younger women but never permitted the memory of Khadija(ra) to become dim. Whenever any of Khadija(ra)'s friends visited him he would stand up to receive her (Muslim). If he chanced to see any article that had belonged to or had been connected with Khadija(ra), he was always overcome by emotion. Among the prisoners taken by the Muslims in the Battle of Badr was a son-in-law of the Prophet(sa). He possessed nothing which he could offer as ransom. His wife Zainab(ra) (the Prophet's(sa) daughter) sent to Medina a necklace which had belonged to her mother (Khadija(ra)) and offered it as ransom for her husband. When the Prophet(sa) saw the necklace he recognized it and was much affected. He said to his Companions: "I have no authority to give any direction in this matter, but I know that this necklace is cherished by Zainab(ra) as a last memento of her deceased mother and, provided it commends itself to you, I would suggest that she should not be deprived of it and it may be returned to her." They intimated that nothing would give them greater pleasure and readily adopted his suggestion (Halbiyya, Vol. 2). He often praised Khadija(ra) to his other wives and stressed her virtues and the sacrifices that she had made in the cause of Islam. On one such occasion A’isha(ra) was piqued and said: "O Messenger of Allah, why go on talking of the old lady? God has bestowed better, younger and more attractive wives upon you." The Holy Prophet(sa) was overcome by emotion at hearing this and protested: "O no, A’isha(ra)! You have no idea how good Khadija(ra) was to me" (Bukhari).