"This being, that is; from the arising of this, that arises. That is: with ignorance as condition, volitional activities come to be; with volitional activities as condition, consciousness comes to be; with consciousness as condition, name-and-form comes to be; with name-and-form as condition, the sixfold base comes to be; with the sixfold base as condition, contact comes to be; with contact as condition, feeling comes to be; with feeling as condition, craving comes to be; with craving as condition, grasping comes to be; with grasping as condition, being comes to be; with being as condition, birth comes to be; with birth as condition, aging-and-death, sorrow, lamentation, pain, grief, and despair come to be. This is the origin of this whole mass of suffering."
Then, on realizing its significance, the Lord uttered on that occasion this inspired utterance:
When things become manifest
To the ardent meditating brahmin,
All his doubts then vanish since he understands
Each thing along with its cause.