Ma'arif al-Qur'an
Mufti Muhammad Shafiعَسَىٰ رَبُّهُ إِن طَلَّقَكُنَّ أَن يُبْدِلَهُ أَزْوَاجًا خَيْرًا مِّنكُنَّ (It is hoped that, if he divorces you, Allah will give him in your place wives better than you, submissive to Allah, believing, devout, penitent, steadfast in worship, fasting, previously married and virgins....66:5). The verse refutes the possible thought of the wives that if they are divorced, the Holy Prophet ﷺ will probably not get women better than themselves. The verse under comment responds to their assessment of the situation. It purports to say that nothing is beyond Allah's power. If he divorces them, Allah will give him in exchange better wives than he has at the moment. This does not necessarily imply that there were better wives than the present holy wives at that time. Possibly such women were not available at that point of time, but, should the need have arisen, He could make other women better than they are. These verses specifically dealt with the holy wives of the Holy Prophet ﷺ ، their deeds, their moral reform, their discipline and training.
Similar injunctions are given in the verses that follow for the general body of Muslims and believers.