KN Pe 7.1 - 7.4 gloss of four jhāna formula: kāya is physical body in Pe, Abhidhamma Vb, Vimutti-magga

 Peṭako-padesa-pāḷi : Pitaka disclosure

    Pe ^7.1 - (first jhāna j1🌘 )
        Pe ^7.1.1 - (rich section on V&V, vitakka & vicara)
        Pe ^7.1.2 - (V&V example: vitakka sees person, vicara scrutinizes their sila)
        Pe ^7.1.3 - (appana is not a frozen trance)
        Pe ^7.1.4 - (V&V winged bird simile)
        Pe ^7.1.5 - (V&V relationship to right/wrong resolves)
        Pe ^7.1.6 - (V&V example: oral tradition of reciting vocally first requires V&V to contain thinking and evaluation)
        Pe ^7.1.7 - (vicara needs to finish the job vitakka started)
        Pe ^7.1.8 - (example: vitakka’s comprehension more superficial, vicara explores/dives deep into meaning)
        Pe ^7.1.9 - (example (related to right effort), vitakka sets task, vicara finishes)
        Pe ^7.1.10 - (first jhāna: what parts mental, physical)
    Pe ^7.2 - (second jhāna j2🌗 )
    Pe ^7.3 - (third jhāna j3🌖 )
    Pe ^7.4 - (fourth jhāna j4🌕 )

7.1 - (first jhāna j1🌘 )

KN-Pe has the earliest detailed word commentary on the standard jhāna formula: Peṭakopadesa 7.72
“composed probably in India before 100 BCE”.
...

7.1.10 - (first jhāna: what parts mental, physical)

imesu vitakka-vicāresu ṭhitassa	584. these directed-thoughts-&-evaluations (being) steady,
duvidhaṃ dukkhaṃ na uppajjati kāyikañca cetasikañca;	two-fold suffering doesn't arise; bodily & mental;
duvidhaṃ sukhaṃ uppajjati kāyikañca cetasikañca.	two-fold pleasure arises; bodily & mental.
iti vitakka-janitaṃ	thus directed-thoughts-generates
cetasikaṃ sukhaṃ	mental pleasure,
pīti kāyikaṃ	rapture (in the) body,
sukhaṃ kāyikoyeva.	pleasure (in the) body.
yā tattha cittassa ekaggatā,	this here (is) mind's unification,
ayaṃ samādhi.	this is undistractable-lucidity.
iti paṭhamaṃ jhānaṃ	Such is first jhāna,
pañc-aṅga-vippahīnaṃ	five-factors-abandoned,
pañc-aṅga-samannāgataṃ.	five-factors-possessed.

7.2 - (second jhāna j2🌗 )

♦ tesaṃyeva vitakka-vicārānaṃ	585. those directed-thoughts-&evaluation,
abhikkhaṇaṃ āsevanāya	(the) constant practice (of that),
tassa tappoṇa-mānasaṃ hoti.	(is what the) mind slopes toward.
tassa vitakka-vicārā	those directed-thoughts-&evaluation,
oḷārikā khāyanti.	coarse (is how they) appear (to him).
yañca pīti-sukhañca nekkhammañca	and-the rapture-&pleasure (born from) renunciation, [piti-sukha from first jhana]
oḷārikaṃ bhavati.	coarse (it) becomes (to him).
api ca samādhi-jā pīti rati ca jāyati.	and then undistractable-lucidity-induced rapture & relish is born.
tassa vicār-ārammaṇaṃ.	586. the evaluation-of-thought-objects [from first jhana V&V],
tesaṃ vūpasamā ajjhattaṃ ceto sampasīdati.	their calming [leads to] internal mental confidence.
ye vitakka-vicārā	those directed-thoughts-&evaluation
dve dhamm-{an?-}ānus-saritabbā.	[are] two dhammas (which) need {not?} be-recollected.
pacc-uppannā daraṇitabbaṃ.	presently-arisen {thinking & evaluation?} should-be-feared.
tesaṃ vūpasamā	with the calming [of directed-thoughts-&evaluation]
Ekodi-bhāvaṃ citt-ekaggataṃ hoti.	{there} becomes-singularity & mental-unification.
tassa ekodi-bhāvena pīti pāripūriṃ gacchati.	(with it) becoming-singular, rapture fulfillment happens.
yā pīti, taṃ so-manass-indriyaṃ,	whatever rapture, that (is) good-[happy]-mental-state-faculty.
yaṃ sukhaṃ, taṃ sukh-indriyaṃ.	whatever pleasure, that (is) [bodily] pleasure-faculty.
yā citt-ekaggatā, ayaṃ samādhi.	whatever mind-unification, that (is) undistractable-lucidity.
taṃ dutiyaṃ jhānaṃ	this second jhana,
catur-aṅga-samannāgataṃ.	four-factors-(it)-possesses.

7.3 - (third jhāna j3🌖 )

so pītiyā virāgā	587. he, (with) rapture's fading-away,
yāti ojahi jalla-sahagataṃ.	drives nutritive-essence wetness-,connected-with-that.
♦ 73. tattha so-manassa-cittam-upādānanti{uppādayati} ca	587. there happy-mental-state-(of)-mind-arises, [pīti leftover from 2nd jhana]
so taṃ vicinanto upekkhameva manasi-karoti.	he then investigates (that with) equanimous-obervation attention.
so pītiyā virāgā	he, (with) rapture's fading,
upekkhako viharati.	equanimously-observing (he) dwells.
yathā ca pītiyā sukha-mānitaṃ,	as-to the rapture induced-pleasure,
taṃ kāyena paṭisaṃvedeti	that, with the [physical] body (he) experiences,
sam-pajāno viharati.	(with) clear-discerning (of that he) dwells.
yena sati-sampajaññena	because-of remembrance-&clear-discerning,
upekkhā-pāripūriṃ gacchati.	equanimous-observation-fulfillment happens.
idaṃ tatiyaṃ jhānaṃ	this third jhana,
catur-aṅga-samannāgataṃ.	four-factors-(it)-possesses.

 kāya is  always physical body in Pe,  Abhidhamma* Vb, Vimt., before Vism.

• BCE milestone EBT events
  • 480 BCE: Birth of the Buddha
  • 400 BCE: Pari-nibbāna of the Buddha
  • 350 BCE: AN 5.50/EA 32.7
  • 237 BCE: KN Ps = Paṭi-sambhidā-magga
  • 200 BCE: Abhidhamma is not EBT
  • 101 BCE(?) KN Pe = Peṭakopadesa : kāya in 4 jhānas is physical
  • 100 BCE KN Mil = Milinda Pañha
• CE milestone EBT events
  • 1 CE Vimt. = Vimutti-magga  kāya in 4 jhānas is physical
    • wikipedia entry
  • 500 CE Vism = Visuddhi-magga  LBT Theravada redefines jhāna as a disembodied, mental paralysis.

Abhidhamma Vb: they gloss kāya as mental body to make abhidhamma momentariness work, but it's still talking about a physical body experience, as Vimt. shows by glossing 3rd jhāna kāya as mental body, but in second jhāna very explicitly says it's a physical body.