Is a will made by a slave, mukatab, mudabbar, or umm walad valid if they die while still in bondage?

Primary text

A will made by a slave (*abd*), a contracted freedman (*mukatab*), a conditionally manumitted slave (*mudabbar*), or a concubine (*umm walad*) is void if they die while remaining in that status, because they possess no property for which to bequeath.