योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-54, verse-61

द्विजचेतनहंसोऽसावानन्दसरसि स्थितः ।
अतिष्ठच्छरदच्छे खे कलापूर्ण इवोडुपः ॥ ६१ ॥

dvijacetanahaṃso'sāvānandasarasi sthitaḥ ,
atiṣṭhaccharadacche khe kalāpūrṇa ivoḍupaḥ 61

61. dvijacetanahaṃsaḥ asau ānandasarasi sthitaḥ
atiṣṭhat śaradacche khe kalāpūrṇaḥ iva uḍupaḥ

61. asau dvijacetanahaṃsaḥ ānandasarasi sthitaḥ
śaradacche khe kalāpūrṇaḥ uḍupaḥ iva atiṣṭhat

61. That swan, the consciousness of the sage (dvija), remained situated in the lake of joy (ānanda), like the full moon in the clear autumn sky.

Words meanings summery:

• द्विजचेतनहंसः (dvijacetanahaṁsaḥ) - the individual soul or consciousness of Uddālaka, likened to a swan in a state of deep meditation (the swan of the consciousness of the twice-born; the conscious swan of the sage)

• असौ (asau) - that one (referring to the consciousness/soul) (that one; he; this)

• आनन्दसरसि (ānandasarasi) - in the metaphorical lake of spiritual joy (ānanda) (in the lake of bliss; in the lake of joy)

• स्थितः (sthitaḥ) - situated, abiding (situated; standing; remaining; abiding)

• अतिष्ठत् (atiṣṭhat) - he remained (in that state) (he stood; he remained; he abode)

• शरदच्छे (śaradacche) - in the clear (sky) of autumn (in the clear autumn; in the pure season of autumn)

• खे (khe) - in the sky (in the sky; in space)

• कलापूर्णः (kalāpūrṇaḥ) - full of digits (referring to the moon) (full of digits; complete in its parts; perfectly formed)

• इव (iva) - like (like; as; as if)

• उडुपः (uḍupaḥ) - moon (moon; star)

Words meanings and morphology

द्विजचेतनहंसः (dvijacetanahaṁsaḥ) - the individual soul or consciousness of Uddālaka, likened to a swan in a state of deep meditation (the swan of the consciousness of the twice-born; the conscious swan of the sage)

(noun)

Nominative, masculine, singular of dvijacetanahaṃsa

dvijacetanahaṁsa - the swan of the consciousness of the twice-born; the conscious swan of the sage

Compound type : tatpuruṣa (dvija+cetana+haṃsa)

• dvija – twice-born; a Brahmin; a bird; a tooth
  noun (masculine)
  From √jan 'to be born' with prefix dvi 'two', referring to a second birth (upanayana for Brahmins, hatching for birds).
  Prefix: dvi
• cetana – consciousness; sentient; spirit
  noun (feminine)
  From √cit 'to perceive, understand'.
  Root: cit (class 1)
• haṃsa – swan; goose; a particular mythical bird; the individual soul (ātman)
  noun (masculine)

असौ (asau) - that one (referring to the consciousness/soul) (that one; he; this)

(pronoun)

Nominative, masculine, singular of adas

adas - that; that one; yonder

आनन्दसरसि (ānandasarasi) - in the metaphorical lake of spiritual joy (ānanda) (in the lake of bliss; in the lake of joy)

(noun)

Locative, neuter, singular of ānandasaras

ānandasaras - lake of bliss; lake of joy

Compound type : tatpuruṣa (ānanda+saras)

• ānanda – joy; bliss; happiness (ānanda)
  noun (masculine)
  From prefix ā + √nand 'to rejoice'.
  Prefix: ā
  Root: nand (class 1)
• saras – lake; pond; pool
  noun (neuter)

स्थितः (sthitaḥ) - situated, abiding (situated; standing; remaining; abiding)

(adjective)

Nominative, masculine, singular of sthita

sthita - situated; standing; abiding; firm

Past Passive Participle

Derived from root √sthā 'to stand'.

Root: sthā (class 1)

Note: Functions as an adjective here, modifying 'haṃsa'.

अतिष्ठत् (atiṣṭhat) - he remained (in that state) (he stood; he remained; he abode)

(verb)

3rd person , singular, active, imperfect past (laṅ) of sthā

Root: sthā (class 1)

Note: The initial 'a' is the augment for the imperfect tense.

शरदच्छे (śaradacche) - in the clear (sky) of autumn (in the clear autumn; in the pure season of autumn)

(adjective)

Locative, neuter, singular of śaradaccha

śaradaccha - clear autumn; pure autumn

Compound type : karmadhāraya (śarad+accha)

• śarad – autumn; a year
  noun (feminine)
• accha – clear; pure; transparent; spotless
  adjective (neuter)

Note: Modifies 'khe'.

खे (khe) - in the sky (in the sky; in space)

(noun)

Locative, neuter, singular of kha

kha - sky; space; ether; zero

कलापूर्णः (kalāpūrṇaḥ) - full of digits (referring to the moon) (full of digits; complete in its parts; perfectly formed)

(adjective)

Nominative, masculine, singular of kalāpūrṇa

kalāpūrṇa - full of digits; complete; perfect

Compound type : tatpuruṣa (kalā+pūrṇa)

• kalā – a part; a digit (of the moon); an art; a skill
  noun (feminine)
• pūrṇa – full; complete; filled
  adjective (masculine)
  Past Passive Participle
  Derived from root √pṛ 'to fill'.
  Root: pṛ (class 9)

Note: Modifies 'uḍupaḥ'.

इव (iva) - like (like; as; as if)

(indeclinable)

Note: Conjunction for comparison.

उडुपः (uḍupaḥ) - moon (moon; star)

(noun)

Nominative, masculine, singular of uḍupa

uḍupa - moon; star