Comm. NT: 40.
Vedanāpaccayātaṇhāpadavitthārakathāvaṇṇanā
“‘Though feeling is condition’ is said in order to prevent a generalization from the preceding words ‘With feeling as condition’ to the effect that craving arises in the presence of every condition accompanied by feeling.
—But is it not impossible to prevent over-generalization in the absence of any such statements as ‘Feeling accompanied by inherent tendency is a condition for craving’?
—No; for we are dealing with an exposition of the round of rebirths.
Since there is no round of rebirths without inherent tendencies, so far as the meaning is concerned it may be taken for granted that the condition is accompanied by inherent tendency.
Or alternatively, it may be recognized that this condition is accompanied by inherent tendency because it follows upon the words ‘With ignorance as condition.’
And with the words ‘With feeling as condition, craving’ the ruling needed is this: ‘There is craving only with feeling as condition,’ and not ‘With feeling as condition there is only craving’”
For inherent tendencies see XXII.45, 60; MN 64. The Arahant has none.