A park of heir betwen husben and wife

All of ulama mazhab deals that husben and wife always participate all receive heir in get a park of heir, but husben gets partly of heir when his wife who death not have child from them or from her husben else. Husben receives a park of one fourth from estate her husben. With requisite If her husben dont have child or dont have child from his wife else. And get a park of one eighth from estate her husben.

      Four mazhab said ‘ what it means is mayit’s child whom is really decline. Whereas grandchild can’t be block one of  husben or wife from  receiving maximal a park. Safi’i and maliki said, grandchild doesn’t receive heir and can’t be block others to receiving heir, because they included to dzaw al arham grup.