योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-125, verse-46

व्योमैकतास्य चिद्व्योम्नो मुधा मूर्ध्नेतरेण किम् ।
नैव तस्य कृतेनार्थो नाकृतेनेह कश्चन ॥ ४६ ॥

vyomaikatāsya cidvyomno mudhā mūrdhnetareṇa kim ,
naiva tasya kṛtenārtho nākṛteneha kaścana 46

46. vyomaikatā asya citvyomnaḥ mudhā mūrdhnā itareṇa kim
| na eva tasya kṛtena arthaḥ na akṛtena iha kaścana ||

46. asya citvyomnaḥ vyomaikatā (asti),
itareṇa mūrdhnā mudhā kim tasya kṛtena arthaḥ na eva (asti),
iha akṛtena ca kaścana na (asti)

46. Since Brahma's (brahmā) oneness (ekatā) is with the space of pure consciousness, what purpose would another head serve in vain? For him, there is neither any benefit from actions performed, nor from actions not performed in this world.

Words meanings summery:

• व्योमैकता (vyomaikatā) - oneness with the cosmic expanse or subtle ether (oneness with space/ether)

• अस्य (asya) - of Brahma (his, of this)

• चित्व्योम्नः (citvyomnaḥ) - of the conscious space/ether, of the space of consciousness

• मुधा (mudhā) - in vain, uselessly, fruitlessly

• मूर्ध्ना (mūrdhnā) - with another head (after his was severed) (with the head, by a head)

• इतरेण (itareṇa) - with another [head] (with another, by other means)

• किम् (kim) - what [is the use]? (what? why?)

• न (na) - not

• एव (eva) - indeed, certainly, only

• तस्य (tasya) - for Brahma (for him, his)

• कृतेन (kṛtena) - by what is done, by action

• अर्थः (arthaḥ) - purpose, meaning, object, benefit

• न (na) - nor, not

• अकृतेन (akṛtena) - by what is not done, by inaction

• इह (iha) - here, in this world

• कश्चन (kaścana) - anything [at all] (anyone, anything)

Words meanings and morphology

व्योमैकता (vyomaikatā) - oneness with the cosmic expanse or subtle ether (oneness with space/ether)

(noun)

Nominative, feminine, singular of vyomaikatā

vyomaikatā - oneness with space, identity with ether

Compound type : tatpuruṣa (vyoman+ekatā)

• vyoman – sky, ether, space, atmosphere
  noun (neuter)
• ekatā – oneness, unity, identity
  noun (feminine)
  From eka (one) + suffix -tā.

अस्य (asya) - of Brahma (his, of this)

(pronoun)

Genitive, masculine, singular of idam

idam - this, that, he, she, it

Note: Refers to Brahma.

चित्व्योम्नः (citvyomnaḥ) - of the conscious space/ether, of the space of consciousness

(noun)

Genitive, neuter, singular of citvyoman

citvyoman - consciousness-space, the ether of consciousness

Compound type : karmadhāraya (cit+vyoman)

• cit – consciousness, thought, mind
  noun (feminine)
• vyoman – sky, ether, space
  noun (neuter)

मुधा (mudhā) - in vain, uselessly, fruitlessly

(indeclinable)

मूर्ध्ना (mūrdhnā) - with another head (after his was severed) (with the head, by a head)

(noun)

Instrumental, masculine, singular of mūrdhan

mūrdhan - head, top, summit

इतरेण (itareṇa) - with another [head] (with another, by other means)

(pronoun)

Instrumental, masculine, singular of itara

itara - other, another, different

Note: Modifies implied 'mūrdhnā'.

किम् (kim) - what [is the use]? (what? why?)

(indeclinable)

Note: Used here idiomatically to question the utility or purpose.

न (na) - not

(indeclinable)

एव (eva) - indeed, certainly, only

(indeclinable)

तस्य (tasya) - for Brahma (for him, his)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Brahma.

कृतेन (kṛtena) - by what is done, by action

(noun)

Instrumental, neuter, singular of kṛta

kṛta - done, made, performed, deed, action

Past Passive Participle

From root kṛ (to do, make). Used here as a neuter noun.

Root: kṛ (class 8)

अर्थः (arthaḥ) - purpose, meaning, object, benefit

(noun)

Nominative, masculine, singular of artha

artha - object, purpose, meaning, wealth, goal, advantage

न (na) - nor, not

(indeclinable)

अकृतेन (akṛtena) - by what is not done, by inaction

(noun)

Instrumental, neuter, singular of akṛta

akṛta - not done, undone, not made, inaction

Past Passive Participle (used as noun)

Negative of kṛta, from root kṛ (to do, make).

Compound type : nañ-tatpuruṣa (a+kṛta)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• kṛta – done, made, performed, deed
  adjective (neuter)
  Past Passive Participle
  From root kṛ (to do, make).
  Root: kṛ (class 8)

इह (iha) - here, in this world

(indeclinable)

कश्चन (kaścana) - anything [at all] (anyone, anything)

(pronoun)

Nominative, masculine, singular of kaścana

kaścana - anyone, any, anything (with negation: nothing)

Formed from the interrogative pronoun kim and the indeclinable cana.

Compound type : pronominal (kim+cana)

• kim – who, what, which
  pronoun (masculine)
• cana – indeed, even; (forms indefinite pronouns/adjectives)
  indeclinable
  Indeclinable particle, appended to interrogative stems to form indefinite pronouns/adjectives (e.g., 'any', 'some').

Note: Used with 'na' to mean 'nothing'.