I know a bit. Not much, but I’ve worked with them a lot and we’ve talked, so a bit. Make sure to double check.
72 is a mystical number for them. I don’t know why, except possibly it is part of the base 12 counting system. Muslims tend to work to base 12 if they can, just like Chinese always work in odd numbers.
Virgins represent purity, which is blessed and to be protected. They do revere the idea of purity massively - as I said in another thread, Our Lady Madonna is the only woman mentioned in the Qu’ran and she is mentioned many times.
We got into an argument once about the nature of the virgins. Are they women? Are they Djinn? It was a lively debate, but we had no Imam to give the answer.
I’ll share what I have learned.
It is important to understand what the number 72 means to most Muslims. It does not represent an absolute number. It refers too many, to many to count in a sense. It would be similar to someone saying there was more of something than you could count.
It does not mean literal virgins although to some it may represent actual virgins. I think virgins refer to pleasures. In essence, the offer to the terrorist is a reward of more pleasures than he could dream of.