注維摩詰經 5.296

5.296

什曰：凡夫行者有三種，善、不善、無動行。無動行，色、無色界行也。上二界壽命劫數長久，外道以為有常，不動義也。佛亦因世所名而名之也。

[Kumāra]jīva says: The practices of ordinary people are of three kinds: wholesome, unwholesome, and immovable practice. Immovable practice is the practice of the form and formless realms. The lifespan and number of kalpas in the upper two realms are long-lasting, and non-Buddhists take them to be permanent; this is the meaning of 'immovable.' The Buddha also names them in accordance with what the world calls them.