योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-50, verse-21

चेतनं चित्तरिक्तं हि प्रत्यक्चेतनमुच्यते ।
निर्मनस्कस्वभावं तन्न तत्र कलनामलः ॥ २१ ॥

cetanaṃ cittariktaṃ hi pratyakcetanamucyate ,
nirmanaskasvabhāvaṃ tanna tatra kalanāmalaḥ 21

21. cetanam cittariktam hi pratyakcetanam ucyate
nirmanaskasvabhāvam tat na tatra kalanāmalaḥ

21. hi cittariktam cetanam pratyakcetanam ucyate
tat nirmanaskasvabhāvam tatra kalanāmalaḥ na

21. Indeed, consciousness that is devoid of mental activity (citta) is called the inner consciousness. That (inner consciousness) inherently possesses a nature free from the mind; therefore, no taint of mental ideation exists within it.

Words meanings summery:

• चेतनम् (cetanam) - consciousness (consciousness, conscious entity, animate being)

• चित्तरिक्तम् (cittariktam) - devoid of mental activity (empty of mind/thought, devoid of mental activity)

• हि (hi) - indeed (indeed, surely, because, for)

• प्रत्यक्चेतनम् (pratyakcetanam) - inner consciousness (inner consciousness, inward-turned consciousness)

• उच्यते (ucyate) - is called (is said, is called, is declared)

• निर्मनस्कस्वभावम् (nirmanaskasvabhāvam) - inherently possesses a nature free from the mind (having a nature without mind, whose intrinsic nature is without mind)

• तत् (tat) - that (referring to inner consciousness) (that, it)

• न (na) - not (not, no)

• तत्र (tatra) - therefore, in that (state) (there, in that, then)

• कलनामलः (kalanāmalaḥ) - taint of mental ideation (taint of ideation, impurity of mental activity)

Words meanings and morphology

चेतनम् (cetanam) - consciousness (consciousness, conscious entity, animate being)

(noun)

Nominative, neuter, singular of cetana

cetana - conscious, animate, mind, intelligence, spirit

Derived from root `cit` (to perceive, to understand) with suffix `ana`.

Root: cit (class 1)

Note: Here it is nominative singular neuter.

चित्तरिक्तम् (cittariktam) - devoid of mental activity (empty of mind/thought, devoid of mental activity)

(adjective)

Nominative, neuter, singular of cittarikta

cittarikta - empty of mind/thought

Compound.

Compound type : tatpuruṣa (citta+rikta)

• citta – mind, thought, consciousness, heart
  noun (neuter)
  From root `cit` (to perceive).
  Root: cit (class 1)
• rikta – empty, void, devoid of, abandoned
  adjective
  Past Passive Participle
  From root `ric` (to empty, leave) + `kta` suffix.
  Root: ric (class 7)

Note: Qualifies `cetanam`.

हि (hi) - indeed (indeed, surely, because, for)

(indeclinable)

प्रत्यक्चेतनम् (pratyakcetanam) - inner consciousness (inner consciousness, inward-turned consciousness)

(noun)

Nominative, neuter, singular of pratyakcetana

pratyakcetana - inner consciousness, consciousness directed inwards

Compound.

Compound type : tatpuruṣa (pratyak+cetana)

• pratyak – inward, internal, reverse, west
  indeclinable
  From `prati` + `añc` (to bend, go).
  Root: añc (class 1)
• cetana – conscious, animate, mind, intelligence, spirit
  noun (neuter)
  Derived from root `cit` (to perceive, to understand) with suffix `ana`.
  Root: cit (class 1)

Note: The subject of `ucyate`.

उच्यते (ucyate) - is called (is said, is called, is declared)

(verb)

3rd person , singular, passive, present (laṭ) of vac

Passive voice of `vac`.

From root `vac` (to speak); passive voice, present tense, 3rd person singular, middle voice ending. The `v` becomes `u` in passive.

Root: vac (class 2)

निर्मनस्कस्वभावम् (nirmanaskasvabhāvam) - inherently possesses a nature free from the mind (having a nature without mind, whose intrinsic nature is without mind)

(adjective)

Nominative, neuter, singular of nirmanaskasvabhāva

nirmanaskasvabhāva - having a nature without mind

Bahuvrīhi compound.

Compound type : bahuvrīhi (nis+manaska+svabhāva)

• nis – without, out, free from
  indeclinable
  Prefix meaning 'out, forth, without'.
• manaska – pertaining to the mind, mindful
  adjective (neuter)
  Derived from `manas` + `ka` suffix.
  Root: man
• svabhāva – intrinsic nature, inherent disposition, self-existence
  noun (masculine)
  Compound of `sva` (own) + `bhāva` (being, nature).
  Root: bhū (class 1)

Note: Qualifies `tat`.

तत् (tat) - that (referring to inner consciousness) (that, it)

(pronoun)

Nominative, neuter, singular of tad

tad - that, this, it

Demonstrative pronoun.

Note: Refers to `pratyakcetanam`.

न (na) - not (not, no)

(indeclinable)

Negative particle.

तत्र (tatra) - therefore, in that (state) (there, in that, then)

(indeclinable)

Adverb formed from `tad` (that) + `tra` (suffix for place).

कलनामलः (kalanāmalaḥ) - taint of mental ideation (taint of ideation, impurity of mental activity)

(noun)

Nominative, masculine, singular of kalanāmala

kalanāmala - impurity of mental activity/ideation

Tatpuruṣa compound.

Compound type : ṣaṣṭhī-tatpuruṣa (kalana+mala)

• kalana – calculating, supposing, ideation, mental activity, imagination
  noun (neuter)
  From root `kal` (to count, compute, consider) + `ana` suffix.
  Root: kal (class 10)
• mala – dirt, impurity, defilement, sin, taint
  noun (neuter)

Note: Subject of implied 'asti' (is).