@ what the Buddha taught
Saṃyutta Nikāya
Nidānavaggo
Dhātusaṃyuttaṃ
Dutiyavaggo
Sattadhātusuttaṃ
SN14.11
Dwelling at Sāvatthi ...
These seven, almsmen, aspects. Which seven?
The aspect of light, the aspect of beauty, the aspect of boundless sky as base, the aspect of boundless cognition as base, the aspect of possesionlessness as base, the aspect of neither-perception-nor-no-perception as base, the aspect of cessation of perception of the felt.
OK these, almsmen, are seven aspects.
So said, a certain almsman said this to the exalted one: 'And this what is, venerable, the aspect of light, and what is the aspect of beauty, and what aspect of boundless sky as base and what is the aspect of boundless cognition as base, and what is the aspect of possesionlessness as base, and what is the aspect of neither-perception-nor-no-perception as base, and what is the aspect of cessation of perception of the felt, OK now this, venerable; knowing the aspects, what are they depending on?
What, almsmen, is the aspect of light, this aspect is known depending on darkness. What is, almsman, the aspect beauty, this aspect is known depending on ugly. What is, almsmen, the aspect of boundless sky, this aspect is known depending on form. What is, almsmen, the aspect of boundless cognition as base, this aspect is known depending on boundless sky as base. What is, almsmen, the aspect of possesionlessness, this aspect is known depending on boundless cognition as base. What is, almsmen, the aspect of neither-perception-nor-no-perception, this aspect is known depending on possesionlessness as base. What is, almsmen, the aspect of perception of the felt, this aspect is known depending on cessation.
'And this what is, venerable, the aspect of light, and what is the aspect of beauty, and what is the aspect of boundless sky as base and what is the aspect of boundless cognition as base, and what is the aspect of possesionlessness as base, and what is the aspect of neither-perception-nor-no-perception as base, and what is the aspect of cessation of perception of the felt, Ok now this, venerable; the aspects, how is the engagement to be reached?'
'And this what is, almsman, the aspect of light, and what is the aspect of beauty, and what aspect of boundless sky as base and what is the aspect of boundless cognition as base, and what is the aspect of possesionlessness as base,
through engagement in perception is this aspect reached.
What is, almsmen, the aspect of neither-perception-nor-no-perception as base,
through engagement with the remaining inclination is this aspect reached.
What is, almsmen, the aspect of cessation of perception of the felt,
through engagement with cessation is this aspect reached.'