महाभारतः mahābhārataḥ - book-12, chapter-288, verse-3

हंसो भूत्वाथ सौवर्णस्त्वजो नित्यः प्रजापतिः ।
स वै पर्येति लोकांस्त्रीनथ साध्यानुपागमत् ॥३॥

3. haṁso bhūtvātha sauvarṇastvajo nityaḥ prajāpatiḥ ,
sa vai paryeti lokāṁstrīnatha sādhyānupāgamat.

3. haṃsaḥ bhūtvā atha sauvarṇaḥ tu ajaḥ nityaḥ prajāpatiḥ
saḥ vai paryeti lokān trīn atha sādhyān upāgamat

3. atha sauvarṇaḥ tu ajaḥ nityaḥ prajāpatiḥ haṃsaḥ bhūtvā
saḥ vai trīn lokān paryeti atha sādhyān upāgamat

3. Having then become a golden swan (Hamsa), Prajapati, who is unborn and eternal, indeed traverses the three worlds, and then approached the Sadhyas.

Words meanings summery:

• हंसः (haṁsaḥ) - Hamsa, a specific divine being often associated with a swan or goose form. (swan, Hamsa)

• भूत्वा (bhūtvā) - having been, having become

• अथ (atha) - then, next, now

• सौवर्णः (sauvarṇaḥ) - golden, made of gold, related to the sun

• तु (tu) - but, yet, indeed, moreover

• अजः (ajaḥ) - unborn (referring to Prajapati) (unborn, goat, Vishnu/Brahma)

• नित्यः (nityaḥ) - eternal, perpetual, constant

• प्रजापतिः (prajāpatiḥ) - The divine creator, Prajapati. (lord of creatures, creator, Prajapati)

• सः (saḥ) - He (Prajapati) (he, that)

• वै (vai) - indeed, certainly, verily

• पर्येति (paryeti) - traverses (the worlds) (wanders around, traverses, surrounds)

• लोकान् (lokān) - worlds, realms, people (plural)

• त्रीन् (trīn) - three

• अथ (atha) - then, next, now

• साध्यान् (sādhyān) - Sadhyas (accusative plural)

• उपागमत् (upāgamat) - approached, went to

Words meanings and morphology

हंसः (haṁsaḥ) - Hamsa, a specific divine being often associated with a swan or goose form. (swan, Hamsa)

(noun)

Nominative, masculine, singular of haṃsa

haṁsa - swan, goose; a mythical bird; the soul, a sage

Note: Refers to Prajapati in the form of Hamsa.

भूत्वा (bhūtvā) - having been, having become

(indeclinable)

Absolutive (gerund)

Root bhū, class 1, absolutive suffix -tvā.

Root: bhū (class 1)

Note: Action performed by Prajapati before subsequent actions.

अथ (atha) - then, next, now

(indeclinable)

सौवर्णः (sauvarṇaḥ) - golden, made of gold, related to the sun

(adjective)

Nominative, masculine, singular of sauvarṇa

sauvarṇa - golden, made of gold, relating to the sun

Derived from suvarṇa (gold).

Note: Agrees with Prajāpatiḥ.

तु (tu) - but, yet, indeed, moreover

(indeclinable)

Note: Used for emphasis or slight contrast.

अजः (ajaḥ) - unborn (referring to Prajapati) (unborn, goat, Vishnu/Brahma)

(adjective)

Nominative, masculine, singular of aja

aja - unborn, not born; a goat; Brahma, Vishnu, Shiva; Kama

From a- (not) and root jan (to be born).

Compound type : nañ-tatpuruṣa (a+ja)

• a – not, un-
  prefix
• ja – born, produced
  adjective (masculine)
  Derived from root jan (to be born).
  Root: jan (class 4)

Note: Agrees with Prajāpatiḥ.

नित्यः (nityaḥ) - eternal, perpetual, constant

(adjective)

Nominative, masculine, singular of nitya

nitya - eternal, perpetual, constant, inherent

Note: Agrees with Prajāpatiḥ.

प्रजापतिः (prajāpatiḥ) - The divine creator, Prajapati. (lord of creatures, creator, Prajapati)

(proper noun)

Nominative, masculine, singular of prajāpati

prajāpati - lord of creatures, progenitor, creator; a title for Brahma

Compound of prajā (offspring, creatures) and pati (lord).

Compound type : ṣaṣṭhī-tatpuruṣa (prajā+pati)

• prajā – offspring, creatures, people
  noun (feminine)
  From pra-jan (to be born forth).
  Prefix: pra
  Root: jan (class 4)
• pati – lord, master, husband
  noun (masculine)

Note: Subject of paryeti and upāgamat.

सः (saḥ) - He (Prajapati) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Prajāpatiḥ.

वै (vai) - indeed, certainly, verily

(indeclinable)

Note: Emphatic particle.

पर्येति (paryeti) - traverses (the worlds) (wanders around, traverses, surrounds)

(verb)

3rd person , singular, active, present (laṭ) of i

Present active third person singular

Root i, class 2, present tense, parasmaipada. With prefix pari.

Prefix: pari

Root: i (class 2)

Note: Subject is Prajāpatiḥ.

लोकान् (lokān) - worlds, realms, people (plural)

(noun)

Accusative, masculine, plural of loka

loka - world, realm, people

Note: Object of paryeti.

त्रीन् (trīn) - three

(numeral)

Note: Agrees with lokān.

अथ (atha) - then, next, now

(indeclinable)

साध्यान् (sādhyān) - Sadhyas (accusative plural)

(proper noun)

Accusative, masculine, plural of sādhya

sādhya - Sādhyas (a class of celestial beings, demigods)

Gerundive

Derived from root sādh (to accomplish, succeed) with suffix -ya. Here used as a proper noun.

Root: sādh (class 5)

Note: Object of upāgamat.

उपागमत् (upāgamat) - approached, went to

(verb)

3rd person , singular, active, imperfect (luṅ) of gam

Imperfect active third person singular

Root gam, class 1, imperfect tense, parasmaipada. With prefix upa-ā.

Prefixes: upa+ā

Root: gam (class 1)

Note: Subject is Prajāpatiḥ.