Comments

Comm. NT: 21.
Paṭhamajjhānakathāvaṇṇanā

‘Either in the fourth or the fifth,’ etc., is said for the purpose of concluding [the discussion] with a paragraph showing the correctness of the meaning already stated.
— Herein, if the sixth and seventh impulsions are said to have lapsed because impulsion is exhausted, how does seventh-impulsion volition come to have result experienceable in the next rebirth and to be of immediate effect on rebirth?
—This is not owing to strength got through a repetition condition.
—What then?— It is owing to the difference in the function’s position (kiriyāvatthā).
For the function [of impulsion] has three positions, that is, initial, medial and final.
Herein, experienceability of result in the next rebirth and immediateness of effect on rebirth are due to the last volition’s final position, not to its strength …
So the fact that the sixth and seventh lapse because impulsion is used up cannot be objected to.

See Table V.

пали	Catutthapañcamesuyeva pana appanā hoti.
Nyanamoli thera	adding that, “It is only either in the fourth or the fifth21 that there is absorption.