महाभारतः mahābhārataḥ - book-11, chapter-19, verse-18

यं स्म तं पर्युपासन्ते वसुं वासवयोषितः ।
क्रीडन्तमिव गन्धर्वं देवकन्याः सहस्रशः ॥१८॥

18. yaṁ sma taṁ paryupāsante vasuṁ vāsavayoṣitaḥ ,
krīḍantamiva gandharvaṁ devakanyāḥ sahasraśaḥ.

18. yam sma tam paryupāsante vasum vāsava-yoṣitaḥ
krīḍantam iva gandharvam devakanyāḥ sahasraśaḥ

18. vāsava-yoṣitaḥ yam tam vasum sma paryupāsante
devakanyāḥ sahasraśaḥ krīḍantam gandharvam iva

18. He whom the wives of the Vasus always worship, and whom thousands of celestial maidens attend upon like a Gandharva (celestial musician) at play.

Words meanings summery:

• यम् (yam) - whom, which

• स्म (sma) - indicating continuity or habitual action ('always') (indeed, (particle indicating past tense or emphasis))

• तम् (tam) - him, that

• पर्युपासन्ते (paryupāsante) - they worship, they attend upon, they serve

• वसुम् (vasum) - (referring to Viviṃśati as if he were a) Vasu (Vasu (a class of deities))

• वासव-योषितः (vāsava-yoṣitaḥ) - wives of Vasus

• क्रीडन्तम् (krīḍantam) - playing, sporting

• इव (iva) - like, as if, as, similar to

• गन्धर्वम् (gandharvam) - a Gandharva (celestial musician)

• देवकन्याः (devakanyāḥ) - celestial maidens, daughters of gods

• सहस्रशः (sahasraśaḥ) - by thousands, in thousands

Words meanings and morphology

यम् (yam) - whom, which

(pronoun)

Accusative, masculine, singular of yad

yad - which, what, who

स्म (sma) - indicating continuity or habitual action ('always') (indeed, (particle indicating past tense or emphasis))

(indeclinable)

तम् (tam) - him, that

(pronoun)

Accusative, masculine, singular of tad

tad - that, he, she, it, him, her

पर्युपासन्ते (paryupāsante) - they worship, they attend upon, they serve

(verb)

3rd person , plural, middle, present (laṭ) of upa-ās

Prefixes: pari+upa

Root: ās (class 2)

वसुम् (vasum) - (referring to Viviṃśati as if he were a) Vasu (Vasu (a class of deities))

(noun)

Accusative, masculine, singular of vasu

vasu - a class of deities, wealth, excellent, good

वासव-योषितः (vāsava-yoṣitaḥ) - wives of Vasus

(noun)

Nominative, feminine, plural of vāsava-yoṣit

vāsava-yoṣit - wife of a Vasu

Compound type : tatpuruṣa (vāsava+yoṣit)

• vāsava – belonging to the Vasus, a son of Vasu
  adjective (masculine)
• yoṣit – woman, wife
  noun (feminine)

क्रीडन्तम् (krīḍantam) - playing, sporting

(participle)

Accusative, masculine, singular of krīḍat

krīḍat - playing, sporting

Present Active Participle

From root krīḍ- (to play) with śatṛ suffix.

Root: krīḍ (class 1)

इव (iva) - like, as if, as, similar to

(indeclinable)

गन्धर्वम् (gandharvam) - a Gandharva (celestial musician)

(noun)

Accusative, masculine, singular of gandharva

gandharva - a class of celestial musicians and dancers

देवकन्याः (devakanyāḥ) - celestial maidens, daughters of gods

(noun)

Nominative, feminine, plural of devakanyā

devakanyā - celestial maiden, daughter of a god

Compound type : tatpuruṣa (deva+kanyā)

• deva – god, divine
  noun (masculine)
• kanyā – maiden, girl, daughter
  noun (feminine)

सहस्रशः (sahasraśaḥ) - by thousands, in thousands

(indeclinable)