योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-75, verse-20

गुहो गहनधीर्वीरस्तारकादिरणक्रियाम् ।
मुक्तोऽपि कृतवान्सर्वं ज्ञानरत्नैकसागरः ॥ २० ॥

guho gahanadhīrvīrastārakādiraṇakriyām ,
mukto'pi kṛtavānsarvaṃ jñānaratnaikasāgaraḥ 20

20. guhaḥ gahana-dhīḥ vīraḥ tārakādi-raṇa-kriyām
muktaḥ api kṛtavān sarvam jñāna-ratna-eka-sāgaraḥ

20. guhaḥ gahana-dhīḥ vīraḥ jñāna-ratna-eka-sāgaraḥ
api muktaḥ sarvam tārakādi-raṇa-kriyām kṛtavān

20. Guha, a hero of profound intellect, though liberated (mukta), still performed all actions related to the war against Tāraka, for he was the sole ocean of the jewel of knowledge.

Words meanings summery:

• गुहः (guhaḥ) - The deity Skanda/Kartikeya (Guha, Skanda, Kartikeya)

• गहन-धीः (gahana-dhīḥ) - one whose intellect is profound, deep-minded

• वीरः (vīraḥ) - hero, brave one

• तारकादि-रण-क्रियाम् (tārakādi-raṇa-kriyām) - The specific actions related to the war against the demon Tāraka. (actions of war starting with Tāraka, actions of war against Tāraka and others)

• मुक्तः (muktaḥ) - spiritually liberated (mukta) (liberated, released, freed)

• अपि (api) - 'even though' or 'although' (even, also, although)

• कृतवान् (kṛtavān) - he did, he performed

• सर्वम् (sarvam) - all [of the actions] (all, everything, whole)

• ज्ञान-रत्न-एक-सागरः (jñāna-ratna-eka-sāgaraḥ) - a sole ocean of the jewel of knowledge

Words meanings and morphology

गुहः (guhaḥ) - The deity Skanda/Kartikeya (Guha, Skanda, Kartikeya)

(proper noun)

Nominative, masculine, singular of guha

guha - Skanda, Kartikeya; a cave

गहन-धीः (gahana-dhīḥ) - one whose intellect is profound, deep-minded

(adjective)

Nominative, masculine, singular of gahana-dhī

gahana-dhī - of profound intellect, deep-minded

Compound adjective describing Guha

Compound type : bahuvrīhi (gahana+dhī)

• gahana – deep, profound, dense, impenetrable
  adjective
• dhī – intellect, understanding, thought
  noun (feminine)

Note: The nominal form ending in -ī is declined like feminine nouns ending in -ī, but here functioning as a masculine nominative singular adjective agreeing with 'Guha'.

वीरः (vīraḥ) - hero, brave one

(noun)

Nominative, masculine, singular of vīra

vīra - hero, brave man, warrior

Note: Also functioning as an adjective here, describing Guha.

तारकादि-रण-क्रियाम् (tārakādi-raṇa-kriyām) - The specific actions related to the war against the demon Tāraka. (actions of war starting with Tāraka, actions of war against Tāraka and others)

(noun)

Accusative, feminine, singular of tārakādi-raṇa-kriyā

tārakādi-raṇa-kriyā - actions of war against Tāraka and others

Compound noun

Compound type : tatpuruṣa (tāraka+ādi+raṇa+kriyā)

• tāraka – Tāraka (a demon)
  proper noun (masculine)
• ādi – beginning with, and others, etc.
  indeclinable
• raṇa – battle, war, combat
  noun (masculine)
• kriyā – action, activity, performance
  noun (feminine)

Note: The compound indicates the actions associated with the war involving Tāraka and others.

मुक्तः (muktaḥ) - spiritually liberated (mukta) (liberated, released, freed)

(adjective)

Nominative, masculine, singular of mukta

mukta - liberated, freed, released

Past Passive Participle

Derived from root muc- (to release)

Root: muc (class 6)

Note: Agrees with 'Guha'.

अपि (api) - 'even though' or 'although' (even, also, although)

(indeclinable)

Note: Used with 'muktaḥ' to form the sense of "although liberated."

कृतवान् (kṛtavān) - he did, he performed

(adjective)

Nominative, masculine, singular of kṛtavat

kṛtavat - having done, performed

Past Active Participle

Derived from root kṛ- (to do, make) with suffix -vat

Root: kṛ (class 8)

Note: Functions as a finite verb. Agrees with 'Guha'.

सर्वम् (sarvam) - all [of the actions] (all, everything, whole)

(pronoun)

Accusative, neuter, singular of sarva

sarva - all, every, whole, entire

Note: Here it functions as a general direct object referring to a totality of actions.

ज्ञान-रत्न-एक-सागरः (jñāna-ratna-eka-sāgaraḥ) - a sole ocean of the jewel of knowledge

(noun)

Nominative, masculine, singular of jñāna-ratna-eka-sāgara

jñāna-ratna-eka-sāgara - sole ocean of the jewel of knowledge

Compound noun acting as a descriptor (Bahuvrīhi or Tatpuruṣa)

Compound type : tatpuruṣa (jñāna+ratna+eka+sāgara)

• jñāna – knowledge, wisdom
  noun (neuter)
  Root: jñā (class 9)
• ratna – jewel, gem, precious object
  noun (neuter)
• eka – one, single, sole
  adjective
• sāgara – ocean, sea
  noun (masculine)

Note: Describes Guha, implying he is the only one who is an ocean of knowledge-jewels.