योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-25, verse-36

पश्चादाप्याययत्येष निमेषसमनन्तरम् ।
अपानशशिनोऽन्तस्था कला प्राणविवस्वता ॥ ३६ ॥

paścādāpyāyayatyeṣa nimeṣasamanantaram ,
apānaśaśino'ntasthā kalā prāṇavivasvatā 36

36. paścāt āpyāyayati eṣaḥ nimeṣasamanantaram
apānaśaśinaḥ antasthā kalā prāṇavivasvatā

36. eṣaḥ apānaśaśinaḥ antasthā kalā nimeṣasamanantaram
paścāt prāṇavivasvatā āpyāyayati

36. Immediately after a blink, this subtle digit (kalā), residing within the moon of the downward vital air (apāna), is nourished by the sun of the upward vital air (prāṇa).

Words meanings summery:

• पश्चात् (paścāt) - subsequently, afterwards (afterwards, behind, subsequently, western)

• आप्याययति (āpyāyayati) - nourishes, sustains (nourishes, causes to swell, fills, strengthens)

• एषः (eṣaḥ) - this (referring to the subtle digit) (this (masculine nominative singular))

• निमेषसमनन्तरम् (nimeṣasamanantaram) - immediately after a blink (immediately after a blink/wink, without interval after a blink)

• अपानशशिनः (apānaśaśinaḥ) - of the moon-like downward vital air (apāna) (of the moon of apāna)

• अन्तस्था (antasthā) - residing within (situated within, internal, inner)

• कला (kalā) - a subtle digit or part (of energy/consciousness) (a digit, a subtle part, a segment, an art)

• प्राणविवस्वता (prāṇavivasvatā) - by the sun-like upward vital air (prāṇa) (by the sun of prāṇa)

Words meanings and morphology

पश्चात् (paścāt) - subsequently, afterwards (afterwards, behind, subsequently, western)

(indeclinable)

आप्याययति (āpyāyayati) - nourishes, sustains (nourishes, causes to swell, fills, strengthens)

(verb)

3rd person , singular, active, present (lat) of āpyāyay

Causative

Causative of root pyāy (1st class, Ātmanepada) with prefix ā

Prefix: ā

Root: pyāy (class 1)

एषः (eṣaḥ) - this (referring to the subtle digit) (this (masculine nominative singular))

(pronoun)

Nominative, masculine, singular of etad

etad - this

निमेषसमनन्तरम् (nimeṣasamanantaram) - immediately after a blink (immediately after a blink/wink, without interval after a blink)

(adjective)

Accusative, neuter, singular of nimeṣasamanantara

nimeṣasamanantara - immediately following a blink

Compound type : tatpuruṣa (nimeṣa+samanantara)

• nimeṣa – a wink, a blink, twinkling of an eye
  noun (masculine)
  From root miṣ with prefix ni
  Prefix: ni
  Root: miṣ (class 6)
• samanantara – immediately following, adjacent, without interval
  adjective (masculine)
  Compound of sam-anantara
  Prefixes: sam+an

Note: Adverbial usage

अपानशशिनः (apānaśaśinaḥ) - of the moon-like downward vital air (apāna) (of the moon of apāna)

(noun)

Genitive, masculine, singular of apānaśaśin

apānaśaśin - the moon of apāna

Compound type : ṣaṣṭhī-tatpuruṣa (apāna+śaśin)

• apāna – downward-moving vital air, one of the five prāṇas
  noun (masculine)
  From root an with prefix apā
  Prefix: apā
  Root: an (class 2)
• śaśin – moon
  noun (masculine)
  From śaś + in (possessing a hare, referring to spots on the moon)
  Root: śas

अन्तस्था (antasthā) - residing within (situated within, internal, inner)

(adjective)

Nominative, feminine, singular of antastha

antastha - situated within, internal

Compound of antar (within) and stha (standing)

Compound type : upapada-tatpuruṣa (antar+stha)

• antar – within, between, inside
  indeclinable
• stha – standing, staying, situated
  adjective (masculine)
  kṛt suffix
  From root sthā with suffix -a
  Root: sthā (class 1)

Note: Qualifies kalā

कला (kalā) - a subtle digit or part (of energy/consciousness) (a digit, a subtle part, a segment, an art)

(noun)

Nominative, feminine, singular of kalā

kalā - a subtle part, a digit (of the moon), an art, skill, a small division of time

Note: Subject of the verb āpyāyayati

प्राणविवस्वता (prāṇavivasvatā) - by the sun-like upward vital air (prāṇa) (by the sun of prāṇa)

(noun)

Instrumental, masculine, singular of prāṇavivasvat

prāṇavivasvat - the sun of prāṇa

Compound type : ṣaṣṭhī-tatpuruṣa (prāṇa+vivasvat)

• prāṇa – upward-moving vital air, life-breath, vital energy (prāṇa)
  noun (masculine)
  From root an with prefix pra
  Prefix: pra
  Root: an (class 2)
• vivasvat – the sun, brilliant, shining
  noun (masculine)
  From root vas with prefix vi and suffix matup/vatup
  Prefix: vi
  Root: vas (class 2)

Note: Agent of nourishment