[369] Therein, which are the wholesome roots (kusalamūla)? Non-greed (alobha), non-hatred (adosa), non-delusion (amoha) … These are called the wholesome roots.
Therein, which is the volitional formation with wholesome roots as condition (kusalamūlapaccayā saṅkhāro)? That which is volition (cetanā), intending, the state of having intended — this is called the volitional formation with wholesome roots as condition. …
Therein, which is the feeling with contact as condition (phassapaccayā vedanā)? That which is mental and neither agreeable nor disagreeable, the neither-painful-nor-pleasant experience born of mind-contact (cetosamphassa), the neither-painful-nor-pleasant feeling born of mind-contact — this is called the feeling with contact as condition. …
Therefore it is said: "Thus is the origin of this whole mass of suffering (dukkha)."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.