योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-45, verse-64

अवस्तुत्वादतो मोक्षो
नात्मनाशे प्रवर्तते ॥ ६४ ॥

avastutvādato mokṣo
nātmanāśe pravartate 64

64. avastutvāt ataḥ mokṣaḥ
na ātman-nāśe pravartate

64. ataḥ avastutvāt mokṣaḥ
ātman-nāśe na pravartate

64. Therefore, because of its unsubstantiality, liberation (mokṣa) does not occur through the destruction of the self (ātman).

Words meanings summery:

• अवस्तुत्वात् (avastutvāt) - due to unsubstantiality, because of being unreal

• अतः (ataḥ) - therefore, hence

• मोक्षः (mokṣaḥ) - liberation, release, emancipation

• न (na) - not, no

• आत्मन्-नाशे (ātman-nāśe) - in the destruction of the self

• प्रवर्तते (pravartate) - proceeds, occurs, takes place, sets in motion

Words meanings and morphology

अवस्तुत्वात् (avastutvāt) - due to unsubstantiality, because of being unreal

(noun)

Ablative, neuter, singular of avastutva

avastutva - unsubstantiality, unreality, non-existence of a thing

Compound type : nañ-tatpuruṣa (a+vastu+tva)

• a – not, non-
  prefix
• vastu – thing, object, reality, substance
  noun (neuter)
• tva – abstract noun suffix (ness, hood)
  suffix

Note: Acts as a causal adverb.

अतः (ataḥ) - therefore, hence

(indeclinable)

Note: Causal conjunction.

मोक्षः (mokṣaḥ) - liberation, release, emancipation

(noun)

Nominative, masculine, singular of mokṣa

mokṣa - liberation, release, emancipation

Root: muc (class 6)

Note: Refers to final liberation (mokṣa).

न (na) - not, no

(indeclinable)

आत्मन्-नाशे (ātman-nāśe) - in the destruction of the self

(noun)

Locative, masculine, singular of ātman-nāśa

ātman-nāśa - destruction of the self

Compound type : ṣaṣṭhī-tatpuruṣa (ātman+nāśa)

• ātman – self, soul, spirit, essence
  noun (masculine)
• nāśa – destruction, ruin, loss
  noun (masculine)
  Root: naś (class 4)

Note: Refers to the self (ātman).

प्रवर्तते (pravartate) - proceeds, occurs, takes place, sets in motion

(verb)

3rd person , singular, middle, present (laṭ) of vṛt

Prefix: pra

Root: vṛt (class 1)

Note: pra-vṛt often implies beginning, occurring, or acting.