What is the implication regarding emancipation when a master has stipulated manumission upon death (Tadbeer) for a slave while owing a debt?

Primary text

When a master stipulates Tadbeer (manumission upon death) for a slave while the master has a debt, manumission occurs proportionally as the value is recovered from the estate. For every portion of the value recovered, a portion corresponding to one-third of that value is freed from the stipulated portion.