The Mukhya Upaniṣads

Maitrī · Prapāṭhaka 1 · Maitrī 1.1

Passage 6

अथ किमेतैर्वा परेऽन्ये गन्धर्वासुरयक्षराक्षसभूतगणपिशाचोरगग्रहादीनां निरोधनं पश्यामः ॥१.६ ॥

In plain words

But what of these? There are others still greater, whose destruction we see — of Gandharvas, Asuras, Yakṣas, Rākṣasas, hosts of spirits, Piśācas, serpents and demons of seizure.