大方廣佛華嚴經隨疏演義鈔 80.36

80.36

疏「彌勒示迷此旨」下，第二出彼經意。既為補處，何理不窮？寄於受屈以悟時聽耳。言「但謂理詰之言」者，即是迷相。然迷有二意：一約彌勒受難。云一切同如，而我獨得授記，誠乖理也，故云理詰之言。二者彌勒不受難。云理雖一如，行滿得記。何得以理而難事耶？故云理詰。

Regarding the commentary's "Maitreya manifested delusion regarding this purport" and so forth: this is the second part, presenting that sūtra's intent. Since he is one destined for Buddhahood in the next lifetime, what principle could he not have exhausted? He merely submitted to humiliation to awaken the listeners of that time. The statement "merely taking it as words of interrogating principle" is the mark of delusion. However, delusion has two meanings: First, in terms of Maitreya accepting the challenge: saying that all are identical with tathatā, yet I alone received the prophecy, truly goes against principle—hence it is called words of interrogating principle. Second, Maitreya did not accept the challenge: saying that although the principle is one tathatā, prophecy is received when practice is fulfilled—how can one challenge phenomena by means of principle? Hence it is called interrogating principle.