योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-68, verse-9

मनोमौनं पञ्चमं च तन्मृतौ काष्ठतापसे ।
भावे सुषुप्तमौनाख्यं जीवन्मुक्तोऽनुजीवति ॥ ९ ॥

manomaunaṃ pañcamaṃ ca tanmṛtau kāṣṭhatāpase ,
bhāve suṣuptamaunākhyaṃ jīvanmukto'nujīvati 9

9. manomaunam pañcamam ca tat mṛtau kāṣṭhatāpase
bhāve suṣuptamaunākhyam jīvanmuktaḥ anujīvati

9. manomaunam ca pañcamam tat mṛtau kāṣṭhatāpase
jīvanmuktaḥ bhāve suṣuptamaunākhyam anujīvati

9. And the fifth [type of silence] is mental silence (manomauna). That [inert mental silence] is like death for a 'log-like ascetic' (kāṣṭhatāpase). However, a liberated-in-life (jīvanmukta) experiences a state known as 'deep-sleep silence' (suṣuptamauna).

Words meanings summery:

• मनोमौनम् (manomaunam) - silence of the mind

• पञ्चमम् (pañcamam) - fifth

• च (ca) - and

• तत् (tat) - that

• मृतौ (mṛtau) - in death, in inertness

• काष्ठतापसे (kāṣṭhatāpase) - in a log-like ascetic (one who is inert in austerity)

• भावे (bhāve) - in the state, in the being

• सुषुप्तमौनाख्यम् (suṣuptamaunākhyam) - known as 'deep-sleep silence'

• जीवन्मुक्तः (jīvanmuktaḥ) - one who has achieved final liberation (mokṣa) while still embodied (a living liberated one)

• अनुजीवति (anujīvati) - experiences, lives in, follows

Words meanings and morphology

मनोमौनम् (manomaunam) - silence of the mind

(noun)

Nominative, neuter, singular of manomauna

manomauna - mental silence

Compound type : tatpuruṣa (manas+mauna)

• manas – mind, intellect
  noun (neuter)
• mauna – silence, quietness
  noun (neuter)
  derived from muni (sage)

पञ्चमम् (pañcamam) - fifth

(adjective)

Nominative, neuter, singular of pañcama

pañcama - fifth

च (ca) - and

(indeclinable)

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

मृतौ (mṛtau) - in death, in inertness

(noun)

Locative, masculine, singular of mṛtyu

mṛtyu - death

Root: mṛ (class 6)

काष्ठतापसे (kāṣṭhatāpase) - in a log-like ascetic (one who is inert in austerity)

(noun)

Locative, masculine, singular of kāṣṭhatāpasa

kāṣṭhatāpasa - log-like ascetic, one whose austerity is inert

Compound type : karmadhāraya (kāṣṭha+tāpasa)

• kāṣṭha – wood, log
  noun (neuter)
• tāpasa – ascetic, hermit
  noun (masculine)
  from tapas (austerity)

भावे (bhāve) - in the state, in the being

(noun)

Locative, masculine, singular of bhāva

bhāva - state, existence, being, nature

Root: bhū (class 1)

सुषुप्तमौनाख्यम् (suṣuptamaunākhyam) - known as 'deep-sleep silence'

(adjective)

Nominative, neuter, singular of suṣuptamaunākhya

suṣuptamaunākhya - named or called 'deep-sleep silence'

Compound type : bahuvrīhi (suṣupta+mauna+ākhya)

• suṣupta – deep sleep, fast asleep
  past passive participle (neuter)
  Past Passive Participle
  from su-ṣvap (to sleep well)
  Prefix: su
  Root: ṣvap (class 2)
• mauna – silence, quietness
  noun (neuter)
  derived from muni (sage)
• ākhya – named, called
  adjective (neuter)
  from ā-khyā (to tell, designate)
  Prefix: ā
  Root: khyā (class 2)

जीवन्मुक्तः (jīvanmuktaḥ) - one who has achieved final liberation (mokṣa) while still embodied (a living liberated one)

(noun)

Nominative, masculine, singular of jīvanmukta

jīvanmukta - one liberated in life, a living liberated person

Compound type : karmadhāraya (jīvat+mukta)

• jīvat – living, alive
  present active participle (masculine)
  Present Active Participle
  from jīv (to live)
  Root: jīv (class 1)
• mukta – liberated, free
  past passive participle (masculine)
  Past Passive Participle
  from muc (to release, liberate)
  Root: muc (class 6)

अनुजीवति (anujīvati) - experiences, lives in, follows

(verb)

3rd person , singular, active, present indicative (laṭ) of anujīv

Prefix: anu

Root: jīv (class 1)