大般涅槃經義記 8.192

8.192

下明眾生有而不見。先明其有，「以是我說一切有」者正明其有。以是眾生所得一乘為佛性故，我說一切眾生有之。「一切眾生悉有一乘」釋成有義。「以無明」下明諸眾生不見所由，先法、次喻、後合可知。

Below, it explains that sentient beings possess it but do not see it. First, it explains its possession: "Because of this, I say all have it" directly explains its possession. Because the One Vehicle attained by sentient beings is the buddha-nature, I say that all sentient beings possess it. "All sentient beings possess the One Vehicle" explains and establishes the meaning of possession. From "Because of ignorance" downward, it explains the reason sentient beings do not see it: first the dharma, next a metaphor, and then the application, which can be understood.