﴿ يَٰٓأَيُّهَا ٱلنَّبِىُّ إِنَّآ أَحْلَلْنَا لَكَ أَزْوَٰجَكَ ٱلَّٰتِىٓ ءَاتَيْتَ أُجُورَهُنَّ وَمَا مَلَكَتْ يَمِينُكَ مِمَّآ أَفَآءَ ٱللَّهُ عَلَيْكَ وَبَنَاتِ عَمِّكَ وَبَنَاتِ عَمَّٰتِكَ وَبَنَاتِ خَالِكَ وَبَنَاتِ خَٰلَٰتِكَ ٱلَّٰتِى هَاجَرْنَ مَعَكَ وَٱمْرَأَةًۭ مُّؤْمِنَةً إِن وَهَبَتْ نَفْسَهَا لِلنَّبِىِّ إِنْ أَرَادَ ٱلنَّبِىُّ أَن يَسْتَنكِحَهَا خَالِصَةًۭ لَّكَ مِن دُونِ ٱلْمُؤْمِنِينَ ۗ قَدْ عَلِمْنَا مَا فَرَضْنَا عَلَيْهِمْ فِىٓ أَزْوَٰجِهِمْ وَمَا مَلَكَتْ أَيْمَٰنُهُمْ لِكَيْلَا يَكُونَ عَلَيْكَ حَرَجٌۭ ۗ وَكَانَ ٱللَّهُ غَفُورًۭا رَّحِيمًۭا ﴾

“O PROPHET! Behold, We have made lawful to thee thy wives unto whom thou hast paid their dowers, as well as those whom thy right hand has come to possess from among the captives of war whom God has bestowed upon thee. And [We have made lawful to thee] the daughters of thy paternal uncles and aunts, and the daughters of thy maternal uncles and aunts, who have migrated with thee [to Yathrib]; and any believing woman who offers herself freely to the Prophet and whom the Prophet might be willing to wed: [this latter being but] a privilege for thee, and not for other believers - [seeing that] We have already made known what We have enjoined upon them with regard to their wives and those whom their right hands may possess. [And] in order that thou be not burdened with [undue] anxiety - for God is indeed much-forgiving, a dispenser of grace –”

For Muslims in general the permitted maximum number of wives has been restricted to four. But, in the case of the Prophet Muhammad, this restriction was not applicable. By the special permission of Almighty God, he took more than four wives. The wisdom behind it was that the Prophet should experience no problem in the performance of his mission. ‘Restriction’ here refers to the problems encountered in the execution of the prophetic mission. In view of various missionary and reformative imperatives, the Prophet felt the need to marry more than four women. In view of these religious considerations, Almighty God did not apply the restriction of four wives in his case. For example, the advantage of the Prophet’s marriage to Umm Salmah and Umm-Habibah was that Khalid ibn Walid, the famed general, and Abu Sufyan ibn Harb, the influential leader no longer opposed him. And the wisdom in the Prophet’s marriage with ‘A’ishah was that a young and intelligent lady should be in his company permanently, so that after him she could teach religion to people for a long period. Accordingly, ‘A’ishah acted as a recorder of the Prophet’s thoughts, words and deeds, and for half a century after his demise, went on nobly serving the cause of Islam by promulgating his ideas.