योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-126, verse-18

पूर्वः पर्वणि शीतांशुबिम्बपार्श्वे स्थितं वपुः ।
चिन्तयंश्चिरमुन्नष्टदेहश्चन्द्रपुरे स्थितः ॥ १८ ॥

pūrvaḥ parvaṇi śītāṃśubimbapārśve sthitaṃ vapuḥ ,
cintayaṃściramunnaṣṭadehaścandrapure sthitaḥ 18

18. pūrvaḥ parvaṇi śītāṃśubimbapārśve sthitam vapuḥ
cintayan ciram unnaṣṭadehaḥ candrapure sthitaḥ

18. pūrvaḥ śītāṃśubimbapārśve parvaṇi sthitam vapuḥ
ciram cintayan unnaṣṭadehaḥ candrapure sthitaḥ

18. The first son, while meditating for a long time on his body, which was situated beside the disc of the moon, eventually attained a state where his body vanished, and he resided in Candrapura.

Words meanings summery:

• पूर्वः (pūrvaḥ) - the eldest son (from a preceding context) (the first, the eldest)

• पर्वणि (parvaṇi) - at the position or phase (of the moon) (on the occasion, at the joint, on the node, at the full or new moon)

• शीतांशुबिम्बपार्श्वे (śītāṁśubimbapārśve) - on the side of the moon's disc

• स्थितम् (sthitam) - situated, located, placed, stood

• वपुः (vapuḥ) - body, form, figure

• चिन्तयन् (cintayan) - meditating, thinking, contemplating

• चिरम् (ciram) - for a long time, for long

• उन्नष्टदेहः (unnaṣṭadehaḥ) - whose body has disappeared, with a vanished body

• चन्द्रपुरे (candrapure) - in Candrapura (Moon City)

• स्थितः (sthitaḥ) - resided (resided, stayed, situated, existing)

Words meanings and morphology

पूर्वः (pūrvaḥ) - the eldest son (from a preceding context) (the first, the eldest)

(adjective)

Nominative, masculine, singular of pūrva

pūrva - first, prior, ancient, eastern, former, elder

पर्वणि (parvaṇi) - at the position or phase (of the moon) (on the occasion, at the joint, on the node, at the full or new moon)

(noun)

Locative, neuter, singular of parvan

parvan - knot, joint, section, chapter, division, a holiday or festival, especially at full or new moon

शीतांशुबिम्बपार्श्वे (śītāṁśubimbapārśve) - on the side of the moon's disc

(noun)

Locative, neuter, singular of śītāṃśubimbapārśva

śītāṁśubimbapārśva - side of the moon's disc

Compound type : tatpuruṣa (śītāṃśu+bimba+pārśva)

• śītāṃśu – moon (literally 'cool-rayed')
  noun (masculine)
• bimba – disc, orb, image, reflection
  noun (neuter)
• pārśva – side, flank, vicinity
  noun (neuter)

स्थितम् (sthitam) - situated, located, placed, stood

(adjective)

Nominative, neuter, singular of sthita

sthita - stood, standing, situated, existing, firm, steady

Past Passive Participle

Derived from the root sthā (to stand) with the suffix -ta.

Root: sthā (class 1)

Note: Modifies 'vapuḥ'

वपुः (vapuḥ) - body, form, figure

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, figure, a beautiful body

चिन्तयन् (cintayan) - meditating, thinking, contemplating

(adjective)

Nominative, masculine, singular of cintayat

cintayat - thinking, reflecting, meditating

Present Active Participle

Derived from the verbal root cint (to think, consider), which is a denominative or secondary root from cit.

Root: cit (class 1)

Note: Functions as a participle describing the subject 'pūrvaḥ'.

चिरम् (ciram) - for a long time, for long

(indeclinable)

Note: Adverbial usage.

उन्नष्टदेहः (unnaṣṭadehaḥ) - whose body has disappeared, with a vanished body

(adjective)

Nominative, masculine, singular of unnaṣṭadeha

unnaṣṭadeha - whose body is lost or has disappeared

Compound type : bahuvrīhi (ud+naṣṭa+deha)

• ud – up, out, forth, completely
  indeclinable
• naṣṭa – lost, destroyed, disappeared, ruined
  adjective (masculine)
  Past Passive Participle
  Derived from the root naś (to perish, disappear).
  Root: naś (class 4)
• deha – body, corporeal frame
  noun (masculine)

Note: Describes 'pūrvaḥ'.

चन्द्रपुरे (candrapure) - in Candrapura (Moon City)

(proper noun)

Locative, neuter, singular of candrapura

candrapura - Candrapura (a city, literally 'Moon City')

स्थितः (sthitaḥ) - resided (resided, stayed, situated, existing)

(adjective)

Nominative, masculine, singular of sthita

sthita - stood, standing, situated, existing, firm, steady

Past Passive Participle

Derived from the root sthā (to stand) with the suffix -ta.

Root: sthā (class 1)

Note: Functions as a predicate adjective here, indicating the state of the subject 'pūrvaḥ'.