योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-120, verse-12

विलोलमञ्जरीजालतडित्सङ्गस्थितोऽसितः ।
चातकस्याम्बुदभ्रान्तिं तमालः कुरुते मुधा ॥ १२ ॥

vilolamañjarījālataḍitsaṅgasthito'sitaḥ ,
cātakasyāmbudabhrāntiṃ tamālaḥ kurute mudhā 12

12. vilolamañjarījālataḍitsangasthitaḥ asitaḥ
cātakasya ambudabhrāntim tamālaḥ kurute mudhā

12. asitaḥ vilolamañjarījālataḍitsangasthitaḥ tamālaḥ cātakasya ambudabhrāntim mudhā kurute.

12. The dark tamāla tree, with its swaying clusters of blossoms that appear like flashes of lightning, uselessly creates the delusion of a rain cloud for the cātaka bird.

Words meanings summery:

• विलोलमञ्जरीजालतडित्सन्गस्थितः (vilolamañjarījālataḍitsangasthitaḥ) - situated with a mass of swaying blossoms that resemble flashes of lightning (situated amidst a network of swaying blossoms and lightning-like streaks)

• असितः (asitaḥ) - dark-colored (referring to the tamāla tree) (dark, black, un-white)

• चातकस्य (cātakasya) - of the cātaka bird (believed to drink only raindrops) (of the cātaka bird)

• अम्बुदभ्रान्तिम् (ambudabhrāntim) - the delusion of a cloud, cloud-mistake

• तमालः (tamālaḥ) - the dark-barked tamāla tree (Garcinia xanthochymus), known for its dark foliage (tamāla tree)

• कुरुते (kurute) - causes, creates (does, makes, causes, performs)

• मुधा (mudhā) - in vain, uselessly, fruitlessly, for nothing

Words meanings and morphology

विलोलमञ्जरीजालतडित्सन्गस्थितः (vilolamañjarījālataḍitsangasthitaḥ) - situated with a mass of swaying blossoms that resemble flashes of lightning (situated amidst a network of swaying blossoms and lightning-like streaks)

(adjective)

Nominative, masculine, singular of vilolamañjarījālataḍitsangasthita

vilolamañjarījālataḍitsangasthita - situated in or with a network of trembling blossoms and lightning-like associations

Compound type : bahuvrīhi (vilola+mañjarī+jāla+taḍit+saṅga+sthita)

• vilola – trembling, swaying, agitated
  adjective (masculine)
  from vi-√lul
  Prefix: vi
  Root: lul (class 1)
• mañjarī – sprout, blossom, cluster of flowers
  noun (feminine)
• jāla – net, network, collection, mass
  noun (neuter)
• taḍit – lightning, flash of lightning
  noun (feminine)
• saṅga – union, association, contact, attachment
  noun (masculine)
  from sam-√gam
  Prefix: sam
  Root: gam (class 1)
• sthita – situated, standing, placed, being
  Past Passive Participle (masculine)
  Past Passive Participle
  from √sthā
  Root: sthā (class 1)

असितः (asitaḥ) - dark-colored (referring to the tamāla tree) (dark, black, un-white)

(adjective)

Nominative, masculine, singular of asita

asita - dark, black, not white

compound: a- (negation) + sita (white)

Compound type : bahuvrīhi (a+sita)

• a – not, un-
  indeclinable
  negative prefix
• sita – white, bound, tied
  adjective (masculine)
  Past Passive Participle of √śve (white) or √si (bind)

Note: Agrees with tamālaḥ.

चातकस्य (cātakasya) - of the cātaka bird (believed to drink only raindrops) (of the cātaka bird)

(noun)

Genitive, masculine, singular of cātaka

cātaka - cātaka bird (Cuculus melanoleucus), pied cuckoo

अम्बुदभ्रान्तिम् (ambudabhrāntim) - the delusion of a cloud, cloud-mistake

(noun)

Accusative, feminine, singular of ambudabhrānti

ambudabhrānti - delusion of a cloud, mistaken belief that something is a cloud

compound: ambuda (cloud) + bhrānti (delusion)

Compound type : tatpuruṣa (ambuda+bhrānti)

• ambuda – cloud (lit. water-giver)
  noun (masculine)
  compound: ambu (water) + da (giver)
• bhrānti – delusion, error, confusion, mistake
  noun (feminine)
  from √bhram
  Root: bhram (class 1)

Note: Object of kurute.

तमालः (tamālaḥ) - the dark-barked tamāla tree (Garcinia xanthochymus), known for its dark foliage (tamāla tree)

(noun)

Nominative, masculine, singular of tamāla

tamāla - tamāla tree (Garcinia xanthochymus), known for its dark bark and leaves

Note: Subject of the sentence.

कुरुते (kurute) - causes, creates (does, makes, causes, performs)

(verb)

3rd person , singular, middle, present (laṭ) of kṛ

present middle

8th class verb (tanvādi), middle voice

Root: kṛ (class 8)

मुधा (mudhā) - in vain, uselessly, fruitlessly, for nothing

(indeclinable)

Note: Modifies kurute.