योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-25, verse-50

अपानजन्मभूमौ च प्राणं नष्टमवेहि हि ।
अस्तंगतवति प्राणे त्वपानेऽभ्युदयोन्मुखे ॥ ५० ॥

apānajanmabhūmau ca prāṇaṃ naṣṭamavehi hi ,
astaṃgatavati prāṇe tvapāne'bhyudayonmukhe 50

50. apānajanmabhūmau ca prāṇam naṣṭam avehi hi
astamgatavati prāṇe tu apāne abhyudayonmukhe

50. ca hi apānajanmabhūmau prāṇam naṣṭam avehi.
tu astamgatavati prāṇe (sati),
apāne abhyudayonmukhe (sati).

50. And indeed, understand that the outward breath (prāṇa) is destroyed in the birthplace of the inward breath (apāna). When the outward breath (prāṇa) has set, and the inward breath (apāna) is about to rise...

Words meanings summery:

• अपानजन्मभूमौ (apānajanmabhūmau) - in the birthplace/realm of the inward breath (apāna)

• च (ca) - and, also, moreover

• प्राणम् (prāṇam) - the outward breath (prāṇa), the upward vital air

• नष्टम् (naṣṭam) - destroyed, vanished, lost, disappeared

• अवेहि (avehi) - know, understand, perceive

• हि (hi) - indeed, surely, because, for

• अस्तम्गतवति (astamgatavati) - having gone to rest, having set, having disappeared

• प्राणे (prāṇe) - in the outward breath (prāṇa), when the prāṇa

• तु (tu) - but, indeed, on the other hand

• अपाने (apāne) - in the inward breath (apāna), when the apāna

• अभ्युदयोन्मुखे (abhyudayonmukhe) - facing towards rising, about to rise, intent on rising

Words meanings and morphology

अपानजन्मभूमौ (apānajanmabhūmau) - in the birthplace/realm of the inward breath (apāna)

(noun)

Locative, feminine, singular of apānajanmabhūmi

apānajanmabhūmi - birthplace/realm of apāna

Compound type : tatpuruṣa (apāna+janman+bhūmi)

• apāna – down-going breath, vital air, esp. the inward breath
  noun (masculine)
  From 'apa-an' (to breathe down)
  Prefix: apa
  Root: an (class 2)
• janman – birth, origin, production
  noun (neuter)
  Root: jan (class 4)
• bhūmi – earth, ground, land, place
  noun (feminine)
  Root: bhū (class 1)

च (ca) - and, also, moreover

(indeclinable)

प्राणम् (prāṇam) - the outward breath (prāṇa), the upward vital air

(noun)

Accusative, masculine, singular of prāṇa

prāṇa - breath, life-force, vital air, esp. the outgoing breath

From 'pra-an' (to breathe forth)

Prefix: pra

Root: an (class 2)

नष्टम् (naṣṭam) - destroyed, vanished, lost, disappeared

(adjective)

Accusative, masculine, singular of naṣṭa

naṣṭa - lost, destroyed, vanished, disappeared

Past Passive Participle

From root 'naś' (to perish, disappear)

Root: naś (class 4)

अवेहि (avehi) - know, understand, perceive

(verb)

2nd person , singular, active, imperative (loṭ) of ava-i

Imperative, 2nd person singular

From root 'i' (to go) with prefix 'ava', often used in sense of 'to know'

Prefix: ava

Root: i (class 2)

हि (hi) - indeed, surely, because, for

(indeclinable)

अस्तम्गतवति (astamgatavati) - having gone to rest, having set, having disappeared

(adjective)

Locative, masculine, singular of astamgatavat

astamgatavat - having gone to rest, having set, having disappeared

Past Active Participle

Formed from 'astam gam' (to set, disappear) + 'kvatu' suffix

Compound type : upapada tatpuruṣa (asta+gatavat)

• asta – setting (of sun), disappearance
  noun (masculine)
• gatavat – having gone, having arrived
  adjective (masculine)
  Past Active Participle
  From root 'gam' (to go) + 'kvatu' suffix
  Root: gam (class 1)

प्राणे (prāṇe) - in the outward breath (prāṇa), when the prāṇa

(noun)

Locative, masculine, singular of prāṇa

prāṇa - breath, life-force, vital air, esp. the outgoing breath

From 'pra-an' (to breathe forth)

Prefix: pra

Root: an (class 2)

तु (tu) - but, indeed, on the other hand

(indeclinable)

अपाने (apāne) - in the inward breath (apāna), when the apāna

(noun)

Locative, masculine, singular of apāna

apāna - down-going breath, vital air, esp. the inward breath

From 'apa-an' (to breathe down)

Prefix: apa

Root: an (class 2)

अभ्युदयोन्मुखे (abhyudayonmukhe) - facing towards rising, about to rise, intent on rising

(adjective)

Locative, masculine, singular of abhyudayonmukha

abhyudayonmukha - intent on rising, about to rise

Compound type : tatpuruṣa (abhyudaya+unmukha)

• abhyudaya – rising, prosperity, dawn
  noun (masculine)
  From 'abhi-ud-i' (to rise towards)
  Prefixes: abhi+ud
  Root: i (class 2)
• unmukha – facing upwards, with face raised, intent on, about to
  adjective (masculine)
  From 'ud' (up) + 'mukha' (face)
  Prefix: ud

Note: Qualifies 'apāne'.