Suppose that in a mountain glen there was a lake that was transparent, clear, and unclouded. A person with clear eyes standing on the bank would see the clams and mussels, pebbles and gravel, and schools of fish swimming about or staying still. They’d think: ‘This lake is transparent, clear, and unclouded. And here are the clams and mussels, pebbles and gravel, and schools of fish swimming about or staying still.’ In the same way, when their mind has become immersed in samādhi like this—purified, bright, flawless, rid of corruptions, pliable, workable, steady, and imperturbable—they project it and extend it toward knowledge of the ending of defilements. This pertains to their wisdom.

This is that spectrum of noble wisdom that the Buddha praised. And there is nothing more to be done.” “It’s incredible, worthy Ānanda, it’s amazing! This spectrum of noble wisdom is complete, not lacking anything! Such a complete spectrum of wisdom cannot be seen among the other ascetics and brahmins. And there is nothing more to be done. Excellent, worthy Ānanda! Excellent! As if he were righting the overturned, or revealing the hidden, or pointing out the path to the lost, or lighting a lamp in the dark so people with clear eyes can see what’s there, the worthy Ānanda has made the teaching clear in many ways. I go for refuge to the worthy Gotama, to the teaching, and to the mendicant Saṅgha. From this day forth, may the worthy Ānanda remember me as a lay follower who has gone for refuge for life.”

Long Discourses 11 With Kevaḍḍha