成唯識論演祕 2.883

2.883

有說：等謂相似，已顯類同。所言流者，是流住義，果從因起，因所流，故名之為流，等之流故，亦依主釋。或所生果與因相似名之為等，從彼所起名之為流，此等即流，持業釋也。故論說云，由果似因名等流故。

Some say: "Equal" (ni-) means similar, which already shows identity of class. What is called "flow" (syanda) has the meaning of flowing and continuing: because the fruit arises from the cause and is what flows forth from the cause, it is called a "flow"; being the flow of the equal, it is also a genitive tatpuruṣa compound. Alternatively, the produced fruit is similar to the cause and is called "equal", and arising from that, it is called "flow"; this equality is itself the flow, which is a karmadhāraya compound. Therefore, the Treatise states: "Because the fruit resembles the cause, it is called an outflow of the equal (niṣyanda)."