At Sāvatthī.

“What do you think, Rāhula? Is the earth element permanent or impermanent?”

“Impermanent, sir.” …

“… the water element … the fire element … the air element … the space element … Is the consciousness element permanent or impermanent?”

“Impermanent, sir.” …

“Seeing this, a learned noble disciple grows disillusioned with the earth element, water element, fire element, air element, space element, and consciousness element …”