महाभारतः mahābhārataḥ - book-3, chapter-298, verse-3

वसूनां वा भवानेको रुद्राणामथ वा भवान् ।
अथ वा मरुतां श्रेष्ठो वज्री वा त्रिदशेश्वरः ॥३॥

3. vasūnāṁ vā bhavāneko rudrāṇāmatha vā bhavān ,
atha vā marutāṁ śreṣṭho vajrī vā tridaśeśvaraḥ.

3. vasūnām vā bhavān ekaḥ rudrāṇām atha vā bhavān
atha vā marutām śreṣṭhaḥ vajrī vā tridaśeśvaraḥ

3. Are you one of the Vasus, or are you one of the Rudras? Or are you the chief of the Maruts, or Vajrin (Indra), the lord of the thirty gods?

Words meanings summery:

• वसूनाम् (vasūnām) - of the Vasus

• वा (vā) - or, either

• भवान् (bhavān) - you (honorific)

• एकः (ekaḥ) - one, a single one

• रुद्राणाम् (rudrāṇām) - of the Rudras

• अथ (atha) - or (introduces another alternative) (then, now, moreover, or)

• वा (vā) - or, either

• भवान् (bhavān) - you (honorific)

• अथ (atha) - or (introduces another alternative) (then, now, moreover, or)

• वा (vā) - or, either

• मरुताम् (marutām) - of the Maruts

• श्रेष्ठः (śreṣṭhaḥ) - chief, best, most excellent

• वज्री (vajrī) - Indra (wielder of the thunderbolt (Indra))

• वा (vā) - or, either

• त्रिदशेश्वरः (tridaśeśvaraḥ) - Indra (lord of the thirty gods)

Words meanings and morphology

वसूनाम् (vasūnām) - of the Vasus

(proper noun)

Genitive, masculine, plural of vasu

vasu - a class of deities, wealth, good

Root: vas

वा (vā) - or, either

(indeclinable)

Conjunction

भवान् (bhavān) - you (honorific)

(pronoun)

Nominative, masculine, singular of bhavat

bhavat - you (respectful), being, existing

Present Active Participle

Masculine nominative singular of bhavat

Root: bhū (class 1)

एकः (ekaḥ) - one, a single one

(numeral)

रुद्राणाम् (rudrāṇām) - of the Rudras

(proper noun)

Genitive, masculine, plural of rudra

rudra - a class of deities, Shiva, a terrible one

Root: rud

अथ (atha) - or (introduces another alternative) (then, now, moreover, or)

(indeclinable)

Particle used to introduce a new topic, a continuation, or an alternative.

वा (vā) - or, either

(indeclinable)

Conjunction

भवान् (bhavān) - you (honorific)

(pronoun)

Nominative, masculine, singular of bhavat

bhavat - you (respectful), being, existing

Present Active Participle

Masculine nominative singular of bhavat

Root: bhū (class 1)

अथ (atha) - or (introduces another alternative) (then, now, moreover, or)

(indeclinable)

Particle used to introduce a new topic, a continuation, or an alternative.

वा (vā) - or, either

(indeclinable)

Conjunction

मरुताम् (marutām) - of the Maruts

(proper noun)

Genitive, masculine, plural of marut

marut - Marut (storm god), wind

Root: mṛ

श्रेष्ठः (śreṣṭhaḥ) - chief, best, most excellent

(adjective)

Nominative, masculine, singular of śreṣṭha

śreṣṭha - best, excellent, chief, principal

Superlative

Superlative degree of praśasya (praiseworthy)

वज्री (vajrī) - Indra (wielder of the thunderbolt (Indra))

(proper noun)

Nominative, masculine, singular of vajrin

vajrin - thunderbolt-wielding, Indra

Derived from vajra (thunderbolt) with suffix in

वा (vā) - or, either

(indeclinable)

Conjunction

त्रिदशेश्वरः (tridaśeśvaraḥ) - Indra (lord of the thirty gods)

(proper noun)

Nominative, masculine, singular of tridaśeśvara

tridaśeśvara - lord of the thirty (gods)

Tatpuruṣa compound

Compound type : tatpuruṣa (tridaśa+īśvara)

• tridaśa – thirty (gods)
  noun (masculine)
  Lit. 'three tens', referring to the collective body of gods.
• īśvara – lord, master, ruler
  noun (masculine)
  From √īś (to be master of)
  Root: īś (class 2)

Note: Refers to Indra.