योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-37, verse-34

बोधादनैक्यमद्वैतं यः शान्तमवतिष्ठते ।
इच्छानिच्छादयः सर्वे भावास्तस्य शिवात्मकाः ॥ ३४ ॥

bodhādanaikyamadvaitaṃ yaḥ śāntamavatiṣṭhate ,
icchānicchādayaḥ sarve bhāvāstasya śivātmakāḥ 34

34. bodhāt anaikyam advaitam yaḥ śāntam avatiṣṭhate
icchā anicchā ādayaḥ sarve bhāvāḥ tasya śiva-ātmakāḥ

34. yaḥ bodhāt anaikyam advaitam śāntam avatiṣṭhate
tasya icchā anicchā ādayaḥ sarve bhāvāḥ śiva-ātmakāḥ

34. He who abides peacefully in the non-dual (advaita) state, having realized through understanding (bodha) that apparent multiplicity (anaikyam) is in fact non-duality, for him, all states such as desire and non-desire are intrinsically auspicious.

Words meanings summery:

• बोधात् (bodhāt) - from understanding, from knowledge, due to realization

• अनैक्यम् (anaikyam) - non-oneness, difference, multiplicity, duality

• अद्वैतम् (advaitam) - non-duality, oneness (philosophical concept)

• यः (yaḥ) - who, he who

• शान्तम् (śāntam) - in the peaceful (non-dual state) (peaceful, tranquil, calm)

• अवतिष्ठते (avatiṣṭhate) - abides, remains, stands, stays

• इच्छा (icchā) - desire, wish

• अनिच्छा (anicchā) - non-desire, absence of desire

• आदयः (ādayaḥ) - and so on, beginning with, etc.

• सर्वे (sarve) - all, every

• भावाः (bhāvāḥ) - states, feelings, conditions, existences

• तस्य (tasya) - his, of him

• शिव-आत्मकाः (śiva-ātmakāḥ) - of the nature of Śiva, inherently auspicious, having the supreme Self (ātman) as their nature

Words meanings and morphology

बोधात् (bodhāt) - from understanding, from knowledge, due to realization

(noun)

Ablative, masculine, singular of bodha

bodha - understanding, knowledge, perception, awakening

From root budh- ('to know, perceive, awaken').

Root: budh (class 1)

अनैक्यम् (anaikyam) - non-oneness, difference, multiplicity, duality

(noun)

Nominative, neuter, singular of anaikya

anaikya - non-unity, difference, disunion, multiplicity

Compound of 'a-' (negative prefix) and 'aikya' (oneness).

Compound type : nañ-tatpuruṣa (a+aikya)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• aikya – unity, oneness, identity
  noun (neuter)
  From 'eka' (one) + suffix '-ya'.

अद्वैतम् (advaitam) - non-duality, oneness (philosophical concept)

(noun)

Nominative, neuter, singular of advaita

advaita - non-duality, a philosophical doctrine of the oneness of ultimate reality

Compound of 'a-' (negative prefix) and 'dvaita' (duality).

Compound type : nañ-tatpuruṣa (a+dvaita)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• dvaita – duality, state of being two
  noun (neuter)
  From 'dvi' (two) + suffix '-ta'.

यः (yaḥ) - who, he who

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what (relative pronoun)

शान्तम् (śāntam) - in the peaceful (non-dual state) (peaceful, tranquil, calm)

(adjective)

Accusative, neuter, singular of śānta

śānta - calm, peaceful, tranquil, quieted

Past Passive Participle

From root śam- ('to be calm, to cease').

Root: śam (class 4)

Note: Here, 'śāntam' is likely functioning adverbially or as an adjective describing the object of 'avatiṣṭhate' (i.e., the peaceful advaitam).

अवतिष्ठते (avatiṣṭhate) - abides, remains, stands, stays

(verb)

3rd person , singular, middle, present indicative (laṭ) of avasthā

Prefix: ava

Root: sthā (class 1)

इच्छा (icchā) - desire, wish

(noun)

Nominative, feminine, singular of icchā

icchā - desire, wish, inclination

From root iṣ- ('to wish, desire').

Root: iṣ (class 6)

अनिच्छा (anicchā) - non-desire, absence of desire

(noun)

Nominative, feminine, singular of anicchā

anicchā - absence of desire, non-desire

Compound of 'a-' (negative prefix) and 'icchā' (desire).

Compound type : nañ-tatpuruṣa (a+icchā)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• icchā – desire, wish
  noun (feminine)
  From root iṣ- ('to wish, desire').
  Root: iṣ (class 6)

आदयः (ādayaḥ) - and so on, beginning with, etc.

(noun)

Nominative, masculine, plural of ādi

ādi - beginning, commencement, source; (when used as a suffix) and so on, et cetera

सर्वे (sarve) - all, every

(adjective)

Nominative, masculine, plural of sarva

sarva - all, every, whole, complete

भावाः (bhāvāḥ) - states, feelings, conditions, existences

(noun)

Nominative, masculine, plural of bhāva

bhāva - being, existence, state, condition, feeling, disposition

From root bhū- ('to be, to exist').

Root: bhū (class 1)

तस्य (tasya) - his, of him

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

शिव-आत्मकाः (śiva-ātmakāḥ) - of the nature of Śiva, inherently auspicious, having the supreme Self (ātman) as their nature

(adjective)

Nominative, masculine, plural of śivātmaka

śivātmaka - whose nature is Śiva, consisting of Śiva, inherently auspicious, having the nature of the Supreme Self

Compound of 'śiva' (auspiciousness/Śiva) and 'ātmaka' (having the nature of).

Compound type : bahuvrīhi (śiva+ātmaka)

• śiva – auspicious, propitious, benevolent; (as a noun) the deity Śiva
  noun (masculine)
• ātmaka – having the nature of, consisting of, relating to the self
  adjective (masculine)
  From 'ātman' (self) + suffix '-ka'.