योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-6, verse-15

कान्तगीतरवानन्दप्रनर्तितसुराङ्गनौ ।
इमौ तौ वल्लकीस्निग्धस्वरौ नारदतुम्बुरू ॥ १५ ॥

kāntagītaravānandapranartitasurāṅganau ,
imau tau vallakīsnigdhasvarau nāradatumburū 15

15. kāntagītaravānandapranartitasurāṅganau imau
tau vallakīsnigdhasvarau nāradatumburū

15. imau tau nāradatumburū
kāntagītaravānandapranartitasurāṅganau vallakīsnigdhasvarau

15. These two are those well-known Nārada and Tumburu, who caused the celestial nymphs to dance in delight with the beautiful sound of their songs, and whose voices are sweet like the (vallakī) lute.

Words meanings summery:

• कान्तगीतरवानन्दप्रनर्तितसुराङ्गनौ (kāntagītaravānandapranartitasurāṅganau) - they who caused the celestial nymphs to dance in delight with the beautiful sound of their songs

• इमौ (imau) - these two

• तौ (tau) - those two

• वल्लकीस्निग्धस्वरौ (vallakīsnigdhasvarau) - having sweet lute-like voices/sounds

• नारदतुम्बुरू (nāradatumburū) - Nārada and Tumburu

Words meanings and morphology

कान्तगीतरवानन्दप्रनर्तितसुराङ्गनौ (kāntagītaravānandapranartitasurāṅganau) - they who caused the celestial nymphs to dance in delight with the beautiful sound of their songs

(adjective)

Nominative, masculine, dual of kāntagītaravānandapranartitasurāṅgana

kāntagītaravānandapranartitasurāṅgana - causing celestial women to dance in joy with lovely song-sound

Compound type : Bahuvrīhi (kānta+gīta+rava+ānanda+pranartita+sura+aṅganā)

• kānta – beautiful, pleasing, beloved, desired
  adjective
• gīta – sung, song, music
  noun (neuter)
  Past Passive Participle
  Derived from root 'gā' (to sing)
  Root: gai (class 1)
• rava – sound, cry, noise, roar
  noun (masculine)
• ānanda – joy, delight, happiness, bliss
  noun (masculine)
• pranartita – made to dance, caused to dance, made to move
  adjective
  Causative Past Passive Participle
  Causative of root 'nṛt' (to dance) with prefix 'pra'
  Prefix: pra
  Root: nṛt (class 4)
• sura – god, deity, celestial being
  noun (masculine)
• aṅganā – woman, beautiful woman, lady, nymph
  noun (feminine)

इमौ (imau) - these two

(pronoun)

Nominative, masculine, dual of idam

idam - this

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that

वल्लकीस्निग्धस्वरौ (vallakīsnigdhasvarau) - having sweet lute-like voices/sounds

(adjective)

Nominative, masculine, dual of vallakīsnigdhasvara

vallakīsnigdhasvara - having sweet, charming sounds like a lute

Compound type : Bahuvrīhi (vallakī+snigdha+svara)

• vallakī – Indian lute, Vīṇā
  noun (feminine)
• snigdha – smooth, soft, tender, sweet, charming, affectionate
  adjective
• svara – sound, voice, tone, note
  noun (masculine)

नारदतुम्बुरू (nāradatumburū) - Nārada and Tumburu

(proper noun)

Nominative, masculine, dual of nāradatumburu

nāradatumburu - Nārada and Tumburu (two celestial musicians)

Compound type : Dvandva (nārada+tumburu)

• nārada – Nārada (a divine sage, musician)
  proper noun (masculine)
• tumburu – Tumburu (a divine musician, Gandharva)
  proper noun (masculine)