佛說觀佛三昧海經 7.18

7.18

"When the Bhagavat lifted his feet, wishing to walk, from his calves like those of an aiṇeya deer five rays of light emerged. The lights were of five colors and circled the Buddha seven times, transforming into a flower curtain like wondrous heavenly flowers. Among the myriad flowers and petals, hundreds of thousands of countless transformed bodhisattvas joined their palms and chanted verses of praise with ten trillion voices. The transformation Buddhas in the sky emitting light from their calves were likewise! Sixteen young nāgas, holding boulders and unleashing thunderbolts and fire, came toward where the Buddha was; the great assembly was terrified and entered the Buddha's light.