The skandhas, sense organs and elements are to be known as resembling earth.
Karma and the mental poisons of beings should be envisaged as the water element.
Improper conceptual activity is viewed as being similar to the element of wind.
The nature of mind, as the element of space, has no ground and no place of abiding.
The improper conceptual activity rests upon the nature of the mind.
Improper conceptual activity brings about all classes of karma and mental poisons.
From the water of karma and mental poisons the skandhas, sense organs and elements arise.
As this [world] arises and disintegrates, they will arise and disintegrate as well.
Maitreya
From the Uttaratantra-shastra