The part I highlighted in bold is the standard first jhana formula.
The way I read it, it seems to agree with MN 111, that one can examine mental factors while in jhāna. Is that how its commonly understood?
Does anyone know where I can find the elided portion of the pali text? It sure looks like in the Vibhanga book, the “abhidhamma method” portion of satipatthana is aware of a physical anatomical body, while in the first jhana. They didn’t add the “body of mental aggregates” in parenthesis when talking about the word kāya/body.
The “sutta method” portion of satipatthana is just 31 body parts, as in MN 10.
Abhidhamma Piṭaka, vibhaṅgapāḷi, 7. satipaṭṭhāna-vibhaṅgo, 2. abhidhammabhājanīyaṃ
2nd method (from SC, PTS)
7.2.2. The Second Method
And how does a monk dwell contemplating (the nature of) the body in the body?
Here a monk, at whatever time, develops the supermundane absorption, which leads out, which goes to decrease (of rebirth), to abandonment of wrong views, to the attainment of the first ground, (where,) quite secluded from sense desires, secluded from unwholesome things, having thinking, reflection, and the happiness and rapture born of seclusion, he dwells,
having attained the first absorption, with difficulty in practice and slow deepening of knowledge, and at that time there is contact, there is feeling, there is perception, there is bodily lightness, there is mental lightness, there is bodily plasticity, there is mental plasticity, there is bodily workableness, there is mental workableness, there is bodily proficiency, there is mental proficiency, there is bodily uprightness, there is mental uprightness, there is mindfulness, there is full awareness, there is calm, there is insight, there is support, there is balance: these are wholesome things.
For one who has produced and developed this supermundane, wholesome absorption, the result (is that), (where,) quite secluded from sense desires, secluded from unwholesome things, having thinking, reflection, and the happiness and rapture born of seclusion, he dwells, having attained the first absorption, and with difficulty in practice, slow deepening of knowledge, and emptiness he contemplates (the nature of) the body in the body, and that which at that time is mindfulness, recollection, Right Mindfulness, the Mindfulness factor of Complete Awakening, the Path factor, and what belongs to the Path: this is said to be ‘attending to mindfulness.’
(Also) the rest of the things associated with the ways of attending to mindfulness.
from CST4 pali
381. kathañca bhikkhu kāye kāyānupassī viharati?
idha bhikkhu yasmiṃ samaye lokuttaraṃ jhānaṃ bhāveti niyyānikaṃ apacayagāmiṃ diṭṭhigatānaṃ pahānāya paṭhamāya bhūmiyā pattiyā vivicceva kāmehi … pe … paṭhamaṃ jhānaṃ upasampajja viharati dukkhapaṭipadaṃ dandhābhiññaṃ, tasmiṃ samaye phasso hoti … pe … avikkhepo hoti. ime dhammā kusalā.
tasseva lokuttarassa kusalassa jhānassa katattā bhāvitattā vipākaṃ vivicceva kāmehi … pe … paṭhamaṃ jhānaṃ upasampajja viharati dukkhapaṭipadaṃ dandhābhiññaṃ suññataṃ kāye kāyānupassī, yā tasmiṃ samaye sati anussati sammāsati satisambojjhaṅgo maggaṅgaṃ maggapariyāpannaṃ — idaṃ vuccati “satipaṭṭhānaṃ”.
avasesā dhammā satipaṭṭhānasampayuttā.