佛說觀佛三昧海經 2.5

2.5

Then the lord of the yakṣas, named Citra, came before Māra, touched his head and face to the ground to pay homage to Māra, and said to the heavenly king: “What are your commands?” Pāpīyān told him: “With my voice, command the six desire heavens, summon the ghost kings below along with all the eight classes [of beings], as well as the wilderness ghosts and the spirits of Yamarāja across the eighteen hells; have them all assemble and proceed to where Gautama is.”