佛說觀佛三昧海經 7.18

7.18

「爾時世尊舉足欲行，佛鹿王腨腨出五光，光有五色繞佛七匝，如天妙花化成花帳，眾花葉間百千無數諸化菩薩，合掌讚偈有萬億音，空中化佛放腨光明亦復如是！十六小龍手執山石，霹靂起火來至佛所，大眾驚怖入佛光中。

"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.