One thing that I want to ask now is : When husband and wife ask the doctor for the opearation, how he can be responsible. I feel they should be responsible. The question is then who is the first heir or second heir who should receive the money.
If they both were responsible, then they both share the Diyah money and if the killed child has siblings and grandparents, then the diyah should be given to them according to their share in the inhertince if they are alive.