法華玄義釋籤 17.29

17.29

四引人中云「五百語達兜」者，調達從於五百學通皆悉不教，但云「但脩無常，可以得通可以得道。」後時有一比丘名曰脩陀，不知因通而起逆罪，依世間禪教其通法，六群雖復麁獷，凡所說法不違聖旨，乃至不違佛之所制。

In the fourth part, adducing persons, where it says "the five hundred spoke to Dadu," Devadatta sought to learn supernormal powers from the five hundred [arhats], but none taught him, only saying: "Merely cultivate impermanence; through it one can attain supernormal powers and attain the path." Later, there was a monk named Xiutuo who did not know that [Devadatta] would give rise to heinous crimes because of supernormal powers, and based on worldly dhyāna taught him the method of supernormal powers. Although the group of six [monks] was coarse and unruly, whatever dharma they preached did not contradict the holy intention, nor even did it contradict the Buddha's prohibitions.