Who inherits the *Wala'* when the father of the mother (maternal grandfather) of a child resulted from a union between a slave and a freed female?

Primary text

If the mother's father (maternal grandfather) is the son of a slave and a freed female, the *Wala'* of the child belongs to the *Mawla* of the paternal grandmother (the mother of the maternal grandfather). This is because the *Mawla* of the mother's father holds *Wala'* over the mother's father. Consequently, this *Mawla* takes precedence over the freed individuals who liberated the child's mother, and the *Wala'* is established for him over the child's mother.