What is the ruling of Islamic Sharia regarding raising a child with autism who suffers from speech and behavioral difficulties, and whose parents fear for his future and care after their death, especially with the impact of this on their family life and their ability to teach him religious rituals?

Grief, even if it is over religious matters, is unhelpful and harmful. Allah has forbidden it in several instances because it neither brings benefit nor repels harm.

To repel grief, you must rely on Allah, have a good opinion of Him, strive to rectify your child's affairs and your own, and fear Allah and entrust Him with your offspring, while having a good opinion that there is good in the affliction.

A Muslim is excused for not being able to control their actions due to their psychological state, such as extreme anger, grief, or joy; so what about a boy? Whoever Allah excuses, we should excuse.

Appreciating mercy towards a son does not mean excessive grief that incapacitates one from fulfilling duties towards him, and shakes patience and contentment with Allah's decree. Rather, effort must be exerted to rectify his situation.

Justice should be observed in dealing with children, and everyone should be given their due rights.