法界次第初門 1.79

1.79

次名、色而辨五陰者，以惑者迷名偏重故。大聖教門，開名則為四心，對色合為五也。此五通稱為陰者，一往而釋，陰以陰覆為義，能覆出世真明之慧而增長生死、集散不絕，故通名為陰。

Next to nāma and rūpa, we elucidate the five skandhas because deluded persons are predominantly confused about nāma. In the great sages' teaching gates, opening nāma yields four mental [skandhas], which in contrast to form are combined to make five. These five are universally called "skandhas" (yin) because, to explain broadly, yin has the meaning of "concealing and covering"; they can cover over the wisdom of supramundane true clarity and increase birth-and-death, gathering and dispersing without cessation; hence they are universally called skandhas (yin).