法華義疏 4.168

4.168

五眼有二門：一者、因中名四眼，果地名佛眼。謂人有肉眼，天有天眼，聲聞慧眼，菩薩法眼，佛有佛眼，故四眼入佛眼中悉名佛眼。今是因果相對，故言佛眼見眾生，不名天眼也。佛眼中約境論其五用，故有五眼者見六道眾生則屬天眼也。又佛眼無所不知、無所不見，亦見六道眾生也。

The five eyes have two perspectives: First, in the causal stage they are named the four eyes, while on the ground of fruition they are named the Buddha eye. That is, humans have the flesh eye, devas have the divine eye, śrāvakas have the wisdom eye, bodhisattvas have the Dharma eye, and the Buddha has the Buddha eye; thus, when the four eyes enter the Buddha eye, all are called the Buddha eye. Here, cause and fruit are contrasted, which is why it says that the Buddha eye sees sentient beings, rather than calling it the divine eye. Within the Buddha eye, discussing its five functions in relation to objects, there are five eyes, and seeing the sentient beings of the six destinies belongs to the divine eye. Furthermore, there is nothing the Buddha eye does not know and nothing it does not see; it also sees the sentient beings of the six destinies.