Who is the owner of a car purchased through a lease-to-own system, when the buyer's father passed away before the contract ended? Is it considered a debt owed by the deceased, to be paid from the inheritance, or a debt owed by the son?

If your father passed away and you had purchased a car for him under an Ijara wa Iqtina (lease-to-own) system, the car still belongs to the seller. The paid and remaining installments must be considered. If you donated the lease payments to him and intended for him to own the car, then the installments you paid became his property. The heirs have the right to complete the lease and acquire ownership of the car, or to terminate the contract if the installments are burdensome for them. If no one wishes to complete the lease, you may complete it yourself, and the car will become your property. However, if you purchased the car for yourself and intended to gift it to your father or for him to benefit from it, then the contract is binding on you, and the car will become your property after the lease concludes.