Is it permissible for the children and wife of a person who died in a car accident to receive compensation from the insurance company, knowing that his wife has a stable source of income and their children are young?

The questioner did not clarify the reason for this insurance. If it is cooperative, takaful insurance, then there is no harm for the heirs in benefiting from the compensation. However, if it is commercial, unlawful insurance, then the contract is void, and the insured is not entitled to anything except the amount of premiums he paid. Any excess should be disposed of by spending it on the welfare of Muslims or on the poor and needy. The driver has no claim against the leasing company as long as the death resulted from the aforementioned cause.