It should be noted that in the context of Shariah law, an adopted child is not considered equivalent to a biological child. Therefore, an adopted child does not have any designated share in the inheritance of the person who adopted them. However, the guardian (the person who adopted them) can give a portion of their assets to the adopted child as a gift while they themselves are still alive, thereby making the child the rightful owner. Likewise, the guardian can also include the adopted child in their will, bequeathing up to one-third of their estate to them.