How old was Khadija at the time of marriage to Prophet Muhammad p, 28 or 40?

It's popularly written that Prophet Muhammad was around 25 when he married his first wife, Lady Khadija, and she was around 40 at the time of the marriage. However, as Sheikh Yasir Qadhi points out, there seems to be stronger evidence that she was around 28 years old at the time of her marriage to Prophet Muhammad (p). The reports of the age of 28 were greater in quantity and quality as well as making more sense based on the number of children Lady Khadija had with the Prophet Muhammad (p).

How old was Khadija at time of marriage - Sheikh Yasir Qadhi

Sharia Law against terrorism:

http://thefactsaboutislam.blogspot.co.uk/2014/04/terrorism-is-hirabah-in-sharia-law-by.html

 

Christians having dreams and converting to Islam:
http://thefactsaboutislam.blogspot.co.uk/2014/03/christians-are-having-dreams-and.html