大毘盧遮那成佛經疏 2.44

2.44

第十五「云何天心？謂心思隨念成就」者，如諸天以先世果報故，若有所須，不加功力隨心而生。數起如是願樂，當知是天心。亦由曾生上界，故有此習也。如真言行人，不期遠大之果，但為自心所率，能障淨菩提心。當自覺知，勿貪世間悉地，是彼對治。

Fifteenth: regarding "What is the deva mind? It means that mental thoughts are accomplished according to what one wishes": for example, due to the retribution of past lives, if the devas need anything, it arises in accordance with their mind without exertion. When such desires and wishes frequently arise, one should know that it is the deva mind. It is also because of having previously been born in the higher realms that one has this habit. If a mantra practitioner does not look toward the distant and vast fruit, but is merely led by their own mind, it can obstruct the pure bodhicitta. One should be aware of this oneself and not crave worldly siddhis; this is its antidote.