[629] Which form (rūpa) is internal (ajjhattika), not growth (upacaya) of form?
The eye base (cakkhāyatana) … the body base (kāyāyatana) — this is that form which is internal, not growth of form.
Which form is external (bāhira), growth of form?
That which is the accumulation (ācaya) of the sense bases (āyatana), that is the growth of form — this is that form which is external, growth of form.
Which form is external, not growth of form?
The form base (rūpāyatana) … edible food (kabaḷīkāro āhāro) — this is that form which is external, not growth of form.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.