雜譬喻經 1.42

1.42

阿修羅前世時曾為貧人，居近河邊常渡河擔薪。時河水深流復駛疾，此人數數為水所漂，既亡所持身又沒溺，隨流宛轉急而得出。時有辟支佛作沙門形詣舍乞食，貧人歡喜即施，飯食訖已行澡水畢，置鉢虛中飛行而去。貧人見之因以發願：「願我後生身形長大，一切深水無過膝者。」以是因緣得極大身，四大海水不能過膝，立大海中身過須彌，手據山頂下觀忉利天。況佛無央數劫積大誓願，法身滿虛何足怪乎？

In a past lifetime, an asura had been a poor man who lived near a river and frequently crossed the river carrying firewood on his shoulders. At that time the river water was deep and the current was swift; this man was repeatedly swept away by the water, losing what he was carrying and nearly drowning, tossing about with the current, only escaping with great urgency. At that time, there was a pratyekabuddha who appeared in the form of a śramaṇa and came to his house begging for food. The poor man rejoiced and immediately gave alms. When the meal was finished and the washing water had been given, [the pratyekabuddha] placed his bowl in the air and flew away. The poor man saw this and made a vow accordingly: "May my body in a future birth be tall and vast, such that no deep waters exceed my knees." By this nidāna, he obtained an extremely large body: the waters of the four great oceans cannot exceed his knees; standing in the great ocean, his body surpasses Mount Sumeru, and resting his hands on the mountain peak, he looks down at the Trāyastriṃśa Heaven. How much more so when the Buddha accumulated great vows for countless kalpas—why should it be surprising that his Dharma body fills the void?