योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-106, verse-19

तथा जन्यत्रसंभारं कृत्वा काञ्चनकन्दरे ।
ययतुस्तौ महामित्रे स्नातुं मन्दाकिनीं नदीम् ॥ १९ ॥

tathā janyatrasaṃbhāraṃ kṛtvā kāñcanakandare ,
yayatustau mahāmitre snātuṃ mandākinīṃ nadīm 19

19. tathā janyatrasasaṃbhāram kṛtvā kāñcanakandare
yayatuḥ tau mahāmitre snātum mandākinīm nadīm

19. tau mahāmitre tathā kāñcanakandare janyatrasasaṃbhāram
kṛtvā mandākinīm nadīm snātum yayatuḥ

19. Then, having created a collection of things that inspire fear in the golden cave, those two great friends went to bathe in the Mandakini river.

Words meanings summery:

• तथा (tathā) - thus, so, in that manner, then

• जन्यत्रससंभारम् (janyatrasasaṁbhāram) - a terrifying illusion created by Cūḍālā (a collection of generated fears, a frightening display, materials for causing fear)

• कृत्वा (kṛtvā) - having done, having made, having performed

• काञ्चनकन्दरे (kāñcanakandare) - in a golden cave

• ययतुः (yayatuḥ) - they both went

• तौ (tau) - those two

• महामित्रे (mahāmitre) - referring to Śikhidhvaja and Cūḍālā (in her disguise as Kumbha) (the two great friends)

• स्नातुम् (snātum) - to bathe

• मन्दाकिनीम् (mandākinīm) - Mandakini (river)

• नदीम् (nadīm) - river

Words meanings and morphology

तथा (tathā) - thus, so, in that manner, then

(indeclinable)

जन्यत्रससंभारम् (janyatrasasaṁbhāram) - a terrifying illusion created by Cūḍālā (a collection of generated fears, a frightening display, materials for causing fear)

(noun)

Accusative, masculine, singular of janyatrasasaṃbhāra

janyatrasasaṁbhāra - a collection of generated fears or agitations, materials for creating fear or agitation

Compound type : tatpuruṣa (janya+trasa+saṃbhāra)

• janya – generated, produced, born, worldly, human
  adjective (neuter)
  Gerundive
  Derived from root jan- 'to be born', suffix -ya
  Root: jan (class 4)
• trasa – fear, terror, agitation, trembling
  noun (masculine)
  Root: tras (class 1)
• saṃbhāra – collection, heap, accumulation, materials, provisions, equipment
  noun (masculine)
  Prefix: sam
  Root: bhṛ (class 3)

कृत्वा (kṛtvā) - having done, having made, having performed

(indeclinable)

Absolutive (Gerund)

Derived from root kṛ- 'to do', suffix -tvā

Root: kṛ (class 8)

काञ्चनकन्दरे (kāñcanakandare) - in a golden cave

(noun)

Locative, neuter, singular of kāñcanakandara

kāñcanakandara - golden cave

Compound type : karmadhāraya (kāñcana+kandara)

• kāñcana – golden, made of gold
  adjective (neuter)
• kandara – cave, cavern, grotto
  noun (neuter)

ययतुः (yayatuḥ) - they both went

(verb)

3rd person , dual, active, past perfect (liṭ) of yā

Root: yā (class 2)

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

महामित्रे (mahāmitre) - referring to Śikhidhvaja and Cūḍālā (in her disguise as Kumbha) (the two great friends)

(noun)

Nominative, masculine, dual of mahāmitra

mahāmitra - great friend

Compound type : karmadhāraya (mahā+mitra)

• mahā – great, large, mighty
  adjective
• mitra – friend, companion, ally
  noun (masculine)

स्नातुम् (snātum) - to bathe

(indeclinable)

Infinitive

Derived from root snā- 'to bathe', suffix -tum

Root: snā (class 2)

मन्दाकिनीम् (mandākinīm) - Mandakini (river)

(proper noun)

Accusative, feminine, singular of mandākinī

mandākinī - Mandakini (a sacred river, especially in the Himalayas or related to Chitrakuta)

नदीम् (nadīm) - river

(noun)

Accusative, feminine, singular of nadī

nadī - river, stream