Re: why prophet married a 6 year old girl??
He did not marry a 6 or 9 or even a 15 year old girl. That is just people creating their own version.
If you research a bit you can find that the girl was 17.
And about people claiming he married someone 40 + and he was 15 years younger
is not true. His wife was 28 at the time of marriage. that is 3 years older than him.