योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-49, verse-9

अरूपत्वात्तथैकत्वान्नित्यत्वादयमीश्वरः ।
वशं भावविकाराणां न कदाचन गच्छति ॥ ९ ॥

arūpatvāttathaikatvānnityatvādayamīśvaraḥ ,
vaśaṃ bhāvavikārāṇāṃ na kadācana gacchati 9

9. arūpatvāt tathā ekatvāt nityatvāt ayam īśvaraḥ
vaśam bhāvavikārāṇām na kadācana gacchati

9. ayam īśvaraḥ arūpatvāt tathā ekatvāt nityatvāt
bhāvavikārāṇām vaśam kadācana na gacchati

9. Due to its formlessness, its singular nature, and its eternality, this Lord (īśvara) never succumbs to the various transformations of being (bhāvavikāra).

Words meanings summery:

• अरूपत्वात् (arūpatvāt) - from/due to formlessness, because of being formless

• तथा (tathā) - thus, and, so, in the same way

• एकत्वात् (ekatvāt) - from/due to oneness, because of unity

• नित्यत्वात् (nityatvāt) - from/due to eternality, because of permanence

• अयम् (ayam) - this (masculine)

• ईश्वरः (īśvaraḥ) - Lord (īśvara), controller, ruler

• वशम् (vaśam) - under the sway/power (sway, control, power, submission)

• भावविकाराणाम् (bhāvavikārāṇām) - of the modifications of existence/being, of the transformations of states

• न (na) - not, no, nor

• कदाचन (kadācana) - never, at no time, ever (with negation)

• गच्छति (gacchati) - goes, attains, falls into, experiences

Words meanings and morphology

अरूपत्वात् (arūpatvāt) - from/due to formlessness, because of being formless

(noun)

Ablative, neuter, singular of arūpatva

arūpatva - formlessness, lack of form, immateriality

Derived from 'arūpa' (formless) with the suffix 'tva' (abstract noun).

Compound type : Nañ-Tatpuruṣa (a+rūpa)

• a – not, non-, un- (negation prefix)
  indeclinable
• rūpa – form, shape, appearance, nature
  noun (neuter)

तथा (tathā) - thus, and, so, in the same way

(indeclinable)

एकत्वात् (ekatvāt) - from/due to oneness, because of unity

(noun)

Ablative, neuter, singular of ekatva

ekatva - oneness, unity, singularity, identity

Derived from 'eka' (one) with the suffix 'tva' (abstract noun).

नित्यत्वात् (nityatvāt) - from/due to eternality, because of permanence

(noun)

Ablative, neuter, singular of nityatva

nityatva - eternality, permanence, constancy, everlasting nature

Derived from 'nitya' (eternal) with the suffix 'tva' (abstract noun).

अयम् (ayam) - this (masculine)

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one, he, she, it

ईश्वरः (īśvaraḥ) - Lord (īśvara), controller, ruler

(noun)

Nominative, masculine, singular of īśvara

īśvara - Lord (īśvara), controller, ruler, master, supreme being

Derived from the root 'īś' (to rule, to be master of).

Root: īś (class 2)

वशम् (vaśam) - under the sway/power (sway, control, power, submission)

(noun)

Accusative, masculine, singular of vaśa

vaśa - will, desire, control, power, authority, subjection

Note: Used here with 'gacchati' to mean 'falls under the sway'.

भावविकाराणाम् (bhāvavikārāṇām) - of the modifications of existence/being, of the transformations of states

(noun)

Genitive, masculine, plural of bhāvavikāra

bhāvavikāra - modifications of existence, changes of state or being

Compound type : Tatpuruṣa (bhāva+vikāra)

• bhāva – existence, state of being, nature, emotion
  noun (masculine)
  Derived from root 'bhū' (to be).
  Root: bhū (class 1)
• vikāra – change, modification, alteration, transformation
  noun (masculine)
  Derived from root 'kṛ' (to do) with prefix 'vi'.
  Prefix: vi
  Root: kṛ (class 8)

न (na) - not, no, nor

(indeclinable)

कदाचन (kadācana) - never, at no time, ever (with negation)

(indeclinable)

गच्छति (gacchati) - goes, attains, falls into, experiences

(verb)

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

present tense, active voice

Root of Class 1, Parasmaipada (active voice).

Root: gam (class 1)