佛祖統紀 2.39

2.39

Forty-first year (jisi): The Prince requested the King's permission to go on an excursion. Proceeding forward to the royal fields, he rested under a jambu tree and watched the plowmen. At that time, a Śuddhāvāsa deity transformed into an earthworm, and crows pecked at it. Seeing this, he was moved to pity, and contemplating immediately, attained the stage of the four dhyānas (Sūtra on Cause and Effect). The King searched for the Prince and found him under the tree; all the tree shadows had shifted, but this tree's shade alone remained covering the Prince's body, like suddenly seeing the bright moon amidst dense clouds (Bodhisattva's Former Deeds Sūtra).