Question Summary:
I was reading the book by Karen Armstrong about Prophet Muhammad (PBUH). There is mentioned that at one point of time prophet Muhammad (PBUH) has 5 wives.

Question Detail:

I was reading the book by Karen Armstrong about Prophet Muhammad (PBUH). There is mentioned that at one point of time prophet Muhammad (PBUH) has 5 wives.

Was it before the revelation related to 4 wives or after that?
If after the revelation than what was the reason of 5 wives?

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatuh
Kindly refer to the following link:
http://www.al-inaam.com/social/polygamous_life.htm
And Allah knows best
Wassalam
Ml. Ishaq E. Moosa,
Student Darul Iftaa
Checked and Approved by:
Mufti Ebrahim Desai
Darul Iftaa, Madrassah In'aamiyyah