Based on compulsory precaution it is prohibited to insert, in the womb of a woman, an egg that is fertilized by a sperm of other than her husband, unless the fertilized egg is old enough to be conventionally recognized as an embryo outside the womb. In this case, it is permissible to insert the embryo inside the womb of a surrogate mother.
The child belongs to the husband and wife, the source of the egg and the sperm used to fertilize it.