My five-year-old son drowned. Do I have to fast for two months?

If the child drowned due to the mother's negligence in safeguarding him, her aqilah (kinsmen responsible for paying blood money) owe blood money (diyah) to his heirs. His living father is entitled to it, unless he pardons it. The aqilah are her agnates. She must also offer expiation for unintentional killing, which is fasting for two consecutive months. If she was not the cause of his drowning, then nothing is incumbent upon her, neither blood money nor expiation.