增壹阿含經 24.5.p151

24.5.p151

Kāśyapa then led his 500 disciples who surrounded him in front and behind, and they went to the Bhagavān. They bowed their heads at his feet and withdrew to stand to one side. He then said to the Bhagavān, “Please, Bhagavān, permit us to become ascetics and cultivate the pure practice.”