योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-18, verse-31

पार्वतीप्रोक्षणदिने तस्मिंस्तत्र महोत्सवः ।
बभूव तासां सर्वासां नृत्यगेयमनोहरः ॥ ३१ ॥

pārvatīprokṣaṇadine tasmiṃstatra mahotsavaḥ ,
babhūva tāsāṃ sarvāsāṃ nṛtyageyamanoharaḥ 31

31. pārvatīprokṣaṇadine tasmin tatra mahotsavaḥ
babhūva tāsām sarvāsām nṛtyageyamanoharaḥ

31. tasmin pārvatīprokṣaṇadine tatra tāsām
sarvāsām nṛtyageyamanoharaḥ mahotsavaḥ babhūva

31. On that day of Parvati's ritual sprinkling, a great festival, charming with dance and song, took place there for all of those goddesses.

Words meanings summery:

• पार्वतीप्रोक्षणदिने (pārvatīprokṣaṇadine) - on the day of Parvati's sprinkling/consecration

• तस्मिन् (tasmin) - on that (day) (on that)

• तत्र (tatra) - there, in that place

• महोत्सवः (mahotsavaḥ) - a great festival, a grand celebration

• बभूव (babhūva) - there was, occurred, happened

• तासाम् (tāsām) - of those (goddesses) (of those)

• सर्वासाम् (sarvāsām) - of all (the goddesses) (of all)

• नृत्यगेयमनोहरः (nṛtyageyamanoharaḥ) - charming with dance and song, delightful with dance and music

Words meanings and morphology

पार्वतीप्रोक्षणदिने (pārvatīprokṣaṇadine) - on the day of Parvati's sprinkling/consecration

(noun)

Locative, neuter, singular of pārvatīprokṣaṇadina

pārvatīprokṣaṇadina - day of Parvati's sprinkling/consecration

Compound type : tatpuruṣa (pārvatī+prokṣaṇa+dina)

• pārvatī – Parvati (daughter of the mountain Himalaya)
  proper noun (feminine)
• prokṣaṇa – sprinkling, consecrating, ritual purification by sprinkling
  noun (neuter)
  Noun of action from pra-√ukṣ (to sprinkle)
  Prefix: pra
  Root: ukṣ (class 1)
• dina – day
  noun (neuter)

तस्मिन् (tasmin) - on that (day) (on that)

(pronoun)

Locative, neuter, singular of tad

tad - that, those, it, they (neuter)

तत्र (tatra) - there, in that place

(indeclinable)

महोत्सवः (mahotsavaḥ) - a great festival, a grand celebration

(noun)

Nominative, masculine, singular of mahotsava

mahotsava - a great festival, a grand celebration

Compound type : karmadhāraya (mahā+utsava)

• mahā – great, large, mighty
  adjective
• utsava – festival, feast, celebration, joy
  noun (masculine)

बभूव (babhūva) - there was, occurred, happened

(verb)

3rd person , singular, active, perfect (lit) of √bhū

Root: bhū (class 1)

तासाम् (tāsām) - of those (goddesses) (of those)

(pronoun)

Genitive, feminine, plural of tad

tad - that, those, her, their (feminine)

सर्वासाम् (sarvāsām) - of all (the goddesses) (of all)

(pronoun)

Genitive, feminine, plural of sarva

sarva - all, every, whole, entire

नृत्यगेयमनोहरः (nṛtyageyamanoharaḥ) - charming with dance and song, delightful with dance and music

(adjective)

Nominative, masculine, singular of nṛtyageyamanohara

nṛtyageyamanohara - charming with dance and song

Compound type : tatpuruṣa (nṛtya+geya+manohara)

• nṛtya – dance, dancing, dramatic representation
  noun (neuter)
• geya – song, singing, to be sung
  noun (neuter)
  Gerundive
  Gerundive form from √gai, used as a noun
  Root: gai (class 1)
• manohara – charming, captivating, delightful, beautiful
  adjective