Does acknowledgment of lineage for a deceased person, infant, or insane person establish lineage and inheritance?

Primary text

The lineage of a deceased person, an infant, or an insane person established through acknowledgment is confirmed, and the acknowledged person inherits. This is the position held by Al-Shafi'i. The evidence for confirming the lineage after death rests on the existence of the acknowledgment, which is the same rationale for establishing lineage during life. This is analogous to cases where the acknowledged person is alive and wealthy, or the acknowledging party is poor; in those instances, the lineage is established, and the acknowledging party may dispose of their wealth, conditional upon the acknowledged person.