Samyutta Nikaya: Khandhavagga: Okkantisamyutta Uppadasamyutta Kilesasamyutta (III – 25 – 27)

 

These three are pretty much the same—they discuss the sense bases, together with their consciousness, contact, and object, then the khandhas, then the four elements, in different ways.

 

Okkantisamyutta: the impermanence of all these, and the recognition of their importance as being stream-entry.

 

Uppadasamyutta: the arising and cessation of all these.

 

Kilesasamyutta: desire and lust for them, the mental corruption they produce, and the mind including towards renunciation of them.