महाभारतः mahābhārataḥ - book-8, chapter-28, verse-39

अथ हंसः स तच्छ्रुत्वा प्रापतत्पश्चिमां दिशम् ।
उपर्युपरि वेगेन सागरं वरुणालयम् ॥३९॥

39. atha haṁsaḥ sa tacchrutvā prāpatatpaścimāṁ diśam ,
uparyupari vegena sāgaraṁ varuṇālayam.

39. atha haṃsaḥ saḥ tat śrutvā prāpatat paścimām
diśam uparyupari vegena sāgaram varuṇālayam

39. atha saḥ haṃsaḥ tat śrutvā vegena uparyupari paścimām diśam sāgaram varuṇālayam prāpatat.

39. Then that swan, having heard that (challenge), flew westward with great speed, high above the ocean, the abode of Varuṇa.

Words meanings summery:

• अथ (atha) - then, now, next

• हंसः (haṁsaḥ) - swan

• सः (saḥ) - that, he, she, it

• तत् (tat) - that, it

• श्रुत्वा (śrutvā) - having heard

• प्रापतत् (prāpatat) - flew towards, fell down

• पश्चिमाम् (paścimām) - western, westernmost

• दिशम् (diśam) - direction, quarter (of the sky)

• उपर्युपरि (uparyupari) - high above, over and over, successively higher

• वेगेन (vegena) - with speed, swiftly, forcibly

• सागरम् (sāgaram) - ocean, sea

• वरुणालयम् (varuṇālayam) - abode of Varuṇa

Words meanings and morphology

अथ (atha) - then, now, next

(indeclinable)

हंसः (haṁsaḥ) - swan

(noun)

Nominative, masculine, singular of haṃsa

haṁsa - swan, goose, a kind of mythical bird

Root: han (class 2)

सः (saḥ) - that, he, she, it

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

तत् (tat) - that, it

(pronoun)

Accusative, neuter, singular of tad

tad - that, it

श्रुत्वा (śrutvā) - having heard

(indeclinable)

Absolutive (Gerund)

From root `śru` (to hear) with `ktvā` suffix

Root: śru (class 5)

प्रापतत् (prāpatat) - flew towards, fell down

(verb)

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

From root `pat` (to fall, fly) with prefix `pra` (forward)

Prefix: pra

Root: pat (class 1)

पश्चिमाम् (paścimām) - western, westernmost

(adjective)

Accusative, feminine, singular of paścima

paścima - western, situated at the rear

दिशम् (diśam) - direction, quarter (of the sky)

(noun)

Accusative, feminine, singular of diś

diś - direction, quarter, region, space

Root: diś (class 6)

उपर्युपरि (uparyupari) - high above, over and over, successively higher

(indeclinable)

Reduplication of `upari` (above, upon)

वेगेन (vegena) - with speed, swiftly, forcibly

(noun)

Instrumental, masculine, singular of vega

vega - speed, velocity, impulse, force

Root: vij (class 6)

सागरम् (sāgaram) - ocean, sea

(noun)

Accusative, masculine, singular of sāgara

sāgara - ocean, sea

वरुणालयम् (varuṇālayam) - abode of Varuṇa

(noun)

Accusative, masculine, singular of varuṇālaya

varuṇālaya - abode of Varuṇa (the deity associated with oceans)

Compound type : tatpuruṣa (varuṇa+ālaya)

• varuṇa – Varuṇa (a Vedic deity, god of oceans, cosmic order)
  proper noun (masculine)
• ālaya – abode, dwelling, house
  noun (masculine)