佛說觀佛三昧海經 7.14

7.14

"At that time, seeing the Bhagavat coming, the nāga king and his sixteen great nāga kinsmen and followers raised great clouds and thunder, roaring and raining down hailstones. Fire issued from their eyes and fire was also spat from their mouths, while smoke and flames poured forth from their scales and body hairs. The five rākṣasīs manifested hideous forms, their eyes like flashing lightning, standing before the Buddha. At that time the nāga prince, seeing the open sky filled with transformation Buddhas, said to his father: 'Father King, you spew fire wishing to harm one Buddha; just look, there are countless Buddhas in the sky!' The nāga, spewing venom with his furious mind, rebuked his son: 'There is only one Buddha! Where could there be so many?'