jhāna is life. jhāna is a 24/7 lifestyle. jhāna and satipaṭṭhāna are done simultaneously.

 

vihāra : [m.] an abode; a dwelling place; mode of life; passing the time.

viharati : [vi + har + a] lives; abides; dwells; sojourns.       

 

yadidaṃ — cattāro sati-’paṭṭhānā.

In other words, this path is the four ways of remembering [The Dharma ];

Katame cattāro?	Which Four [ways]?
Idha, bhikkhave, bhikkhu …	It’s when …

(standard 4sp🐘 formula)

kāye kāyā-(a)nu-passī viharati	He lives continuously seeing the body as a body [as it truly is].
vedanāsu vedanā-(a)nu-passī viharati	He lives continuously seeing sensations as sensations [as it truly is].
citte cittā-(a)nu-passī viharati	He lives continuously seeing a mind as a mind [as it truly is].
dhammesu dhammā-(a)nu-passī viharati	He lives continuously seeing ☸Dharma as ☸Dharma [as it truly is].
(… elided refrain from each way…)	[in each of the 4 ways of remembering]:
ātāpī sampajāno satimā,	he is ardent 🏹, he has lucid discerning 👁, he remembers 🐘 [to apply relevant ☸Dharma].
vineyya loke abhijjhā-do-manassaṃ;	he should remove greed and distress regarding the world.

4.3.2.5. Paṭhamajhāna	4.3.2.5. First jhāna
so	The monk is

(STED 1st Jhāna)

🚫💑 vivicc’eva kāmehi	Judiciously-secluded from sensuality,
🚫😠 vivicca a-kusalehi dhammehi	Judiciously-secluded from unskillful ☸Dharmas,
(V&V💭) sa-vitakkaṃ sa-vicāraṃ	with directed-thought and evaluation [of those verbal ☸Dharma thoughts],
😁🙂 viveka-jaṃ pīti-sukhaṃ	with [mental] rapture and [physical] pleasure born from judicious-seclusion,
🌘 paṭhamaṃ jhānaṃ upasampajja viharati.	he attains and lives in first jhāna.

4.3.2.6 - Second jhāna

4.3.2.6. Dutiyajhāna	4.3.2.6. Second jhāna
Puna caparaṃ, mahārāja, bhikkhu	Furthermore,

(STED 2nd Jhāna)

Vitakka-vicārānaṃ vūpasamā	with the subsiding of directed-thought and evaluation [of those verbal ☸Dharma thoughts],
ajjhattaṃ sam-pasādanaṃ	with internal purity and self-confidence,
🌄 cetaso ekodi-bhāvaṃ	his mind becomes singular in focus.
🚫(V&V💭) a-vitakkaṃ a-vicāraṃ	Without directed-thought and evaluation, [mental processing is now subverbal,]
🌄😁🙂 samādhi-jaṃ pīti-sukhaṃ	[mental] rapture and [physical] pleasure is born from undistractible-lucidity,
🌗 dutiyaṃ jhānaṃ upasampajja viharati.	he attains and lives in second jhāna.

4.3.2.7 - Third jhāna

4.3.2.7. Tatiyajhāna	4.3.2.7. Third jhāna
Puna caparaṃ, mahārāja, bhikkhu	Furthermore,

(STED 3rd Jhāna)

🚫😁 pītiyā ca virāgā	With [mental] rapture fading,
👁 upekkhako ca viharati	he lives equanimously observing [☸Dharmas with subverbal mental processing].
(S&S🐘💭) sato ca sam-pajāno,	remembering [and applying relevant ☸Dharma], he lucidly discerns.
🙂🚶 sukhañca kāyena paṭi-saṃ-vedeti,	He experiences pleasure with the [physical] body.
yaṃ taṃ ariyā ācikkhanti —	The Noble Ones praise this [stage of jhāna in particular because they expect this to be the normal state of the average monk in all postures at all times]:
‘upekkhako satimā sukha-vihārī’ti	"He lives happily with pleasure, Equanimously observing and remembering [to engage in relevant ☸Dharma]."
🌖 tatiyaṃ jhānaṃ upasampajja viharati.	he attains and lives in third jhāna.

4.3.2.8 - Fourth jhāna

4.3.2.8. Catutthajhāna	4.3.2.8. Fourth jhāna
Puna caparaṃ, mahārāja, bhikkhu	Furthermore,

(STED 4th Jhāna)

sukhassa ca pahānā	With the abandoning of [physical] pleasure
dukkhassa ca pahānā	and pain,
pubbeva so-manassa-do-manassānaṃ atthaṅgamā	with the previous abandoning of elated and distressed mental states,
A-dukkham-a-sukhaṃ	experiencing [physical] sensations of neither pain nor pleasure,
👁🐘 Upekkhā-sati-pārisuddhiṃ	his equanimous observation and his remembering [and application of relevant ☸Dharma] is purified.
🌕 catutthaṃ jhānaṃ upasampajja viharati	he attains and lives in fourth jhāna.