Leaving the car key inside it and one of the sons drove it into the well with all the children inside
You have to make
Kaffarah for the involuntary manslaughter. It is to manumit a believing slave for each of the boys who died in the accident, and if this is not available, you have to fast for two successive months (60 days) for each boy. This is because you were negligent in leaving the keys in the car and in forgetting to close its doors. On the other hand, the payment of Diyah is a matter decided by courts.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.