Re: satta watta
Ibn Siddique, thank you for sharing. I had no idea how it actually works. From what I can understand, it was merely a barter and not the type of marriage permissible in Islam where mahr is to be given to the bride.
Also, I'm assuming even when watta satta marriages take place and there is mahr, consent, and agreement involved, it is likely that avenging the mistreatment of one's sibling on his spouse would be impermissible?
The reason why many do watta satta is because if person A is to do something to his wife, Person B would treat person A's sister the same way. Therefore, the two are literally forced to be nice to each other or stay married, otherwise the sibling married to the other individual would receive similar treatment.