योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-68, verse-11

वांग्मौनं मौनमित्येतत्सिद्धं तच्च मनः किल ।
मलिनं जीवबन्धाय तत्रस्थः काष्ठतापसः ॥ ११ ॥

vāṃgmaunaṃ maunamityetatsiddhaṃ tacca manaḥ kila ,
malinaṃ jīvabandhāya tatrasthaḥ kāṣṭhatāpasaḥ 11

11. vāṅmaunam maunam iti etat siddham tat ca manaḥ
kila malinam jīvabandhāya tatrasthaḥ kāṣṭhatāpasaḥ

11. etat vāṅmaunam iti maunam siddham tat manaḥ ca
kila malinam jīvabandhāya kāṣṭhatāpasaḥ tatrasthaḥ

11. This speech silence (vāṅmauna) is merely established as silence (maunam). But that mind, indeed (kila), remains defiled (malinaṃ), leading to the bondage of the individual soul (jīva). The 'log-like ascetic' (kāṣṭhatāpasa) remains in that [defiled mental] state.

Words meanings summery:

• वाङ्मौनम् (vāṅmaunam) - speech silence

• मौनम् (maunam) - silence

• इति (iti) - thus, so, denoting definition or quotation

• एतत् (etat) - this

• सिद्धम् (siddham) - established, accomplished, proven

• तत् (tat) - that

• च (ca) - and, but

• मनः (manaḥ) - mind

• किल (kila) - indeed, surely, as is well known

• मलिनम् (malinam) - defiled, impure, dirty

• जीवबन्धाय (jīvabandhāya) - for the bondage of the individual soul (jīva)

• तत्रस्थः (tatrasthaḥ) - residing in the state of a defiled mind (situated there, dwelling in that state)

• काष्ठतापसः (kāṣṭhatāpasaḥ) - an ascetic whose practice of austerity (tapas) is merely inert, like a log (the log-like ascetic)

Words meanings and morphology

वाङ्मौनम् (vāṅmaunam) - speech silence

(noun)

Nominative, neuter, singular of vāṅmauna

vāṅmauna - verbal silence, silence of speech

Compound type : tatpuruṣa (vāc+mauna)

• vāc – speech, voice
  noun (feminine)
• mauna – silence, quietness
  noun (neuter)
  derived from muni (sage)

मौनम् (maunam) - silence

(noun)

Nominative, neuter, singular of mauna

mauna - silence, quietness

derived from muni (sage)

इति (iti) - thus, so, denoting definition or quotation

(indeclinable)

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

सिद्धम् (siddham) - established, accomplished, proven

(adjective)

Nominative, neuter, singular of siddha

siddha - established, perfected, proven, accomplished

Past Passive Participle

Root: sidh (class 1)

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

च (ca) - and, but

(indeclinable)

मनः (manaḥ) - mind

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, heart

किल (kila) - indeed, surely, as is well known

(indeclinable)

मलिनम् (malinam) - defiled, impure, dirty

(adjective)

Nominative, neuter, singular of malina

malina - dirty, impure, defiled, stained

जीवबन्धाय (jīvabandhāya) - for the bondage of the individual soul (jīva)

(noun)

Dative, masculine, singular of jīvabandha

jīvabandha - bondage of the individual soul

Compound type : tatpuruṣa (jīva+bandha)

• jīva – individual soul, living being
  noun (masculine)
• bandha – bondage, fetter, binding
  noun (masculine)
  from bandh (to bind)
  Root: bandh (class 9)

तत्रस्थः (tatrasthaḥ) - residing in the state of a defiled mind (situated there, dwelling in that state)

(adjective)

Nominative, masculine, singular of tatrastha

tatrastha - situated there, standing in that, remaining in that

Compound type : tatpuruṣa (tatra+stha)

• tatra – there, in that place/state
  indeclinable
• stha – standing, existing, situated
  adjective (masculine)
  derived from root sthā (to stand)
  Root: sthā (class 1)

काष्ठतापसः (kāṣṭhatāpasaḥ) - an ascetic whose practice of austerity (tapas) is merely inert, like a log (the log-like ascetic)

(noun)

Nominative, 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)