योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-82, verse-21

अतत्त्वे तत्त्वभावेन जीवो देहावृतः स्थितः ।
निर्देहो भवति श्रीमान् सुखी तत्त्वैकभावनात् ॥ २१ ॥

atattve tattvabhāvena jīvo dehāvṛtaḥ sthitaḥ ,
nirdeho bhavati śrīmān sukhī tattvaikabhāvanāt 21

21. atattve tattvabhāvena jīvaḥ dehāvṛtaḥ sthitaḥ
nirdehaḥ bhavati śrīmān sukhī tattvaikabhāvanāt

21. jīvaḥ atattve tattvabhāvena dehāvṛtaḥ sthitaḥ (asti).
(saḥ) tattvaikabhāvanāt nirdehaḥ śrīmān sukhī bhavati

21. The individual soul (jīva) remains embodied, considering that which is not real (i.e., the body) as reality. However, by contemplating the single ultimate reality (tattva), one becomes glorious, blissful, and freed from the identification with the body.

Words meanings summery:

• अतत्त्वे (atattve) - in the non-reality, in what is not real

• तत्त्वभावेन (tattvabhāvena) - with the perception of reality, by the sense of reality

• जीवः (jīvaḥ) - individual soul (jīva), living being

• देहावृतः (dehāvṛtaḥ) - covered by the body, embodied

• स्थितः (sthitaḥ) - situated, abiding, standing, remaining

• निर्देहः (nirdehaḥ) - disembodied, without a body

• भवति (bhavati) - becomes, is, exists

• श्रीमान् (śrīmān) - glorious, blessed, prosperous, opulent

• सुखी (sukhī) - happy, blissful, joyful

• तत्त्वैकभावनात् (tattvaikabhāvanāt) - from the contemplation/realization of the sole reality

Words meanings and morphology

अतत्त्वे (atattve) - in the non-reality, in what is not real

(noun)

Locative, neuter, singular of atattva

atattva - unreality, that which is not real or essential

Compound type : nañ-tatpuruṣa (a+tattva)

• a – not, non-, un-
  indeclinable
• tattva – truth, reality, principle, essence
  noun (neuter)

तत्त्वभावेन (tattvabhāvena) - with the perception of reality, by the sense of reality

(noun)

Instrumental, masculine, singular of tattvabhāva

tattvabhāva - perception of reality, state of reality

Compound type : tatpuruṣa (tattva+bhāva)

• tattva – truth, reality, principle, essence
  noun (neuter)
• bhāva – state, condition, nature, feeling, apprehension, perception
  noun (masculine)
  Root: bhū (class 1)

जीवः (jīvaḥ) - individual soul (jīva), living being

(noun)

Nominative, masculine, singular of jīva

jīva - individual soul, living being, life

Root: jīv (class 1)

देहावृतः (dehāvṛtaḥ) - covered by the body, embodied

(adjective)

Nominative, masculine, singular of dehāvṛta

dehāvṛta - covered by the body, embodied

Compound type : tatpuruṣa (deha+āvṛta)

• deha – body, form
  noun (masculine)
  Root: dih (class 4)
• āvṛta – covered, enveloped, surrounded
  adjective (masculine)
  Past Passive Participle
  From root vṛ (5th/9th class) with prefix ā
  Prefix: ā
  Root: vṛ (class 5)

स्थितः (sthitaḥ) - situated, abiding, standing, remaining

(adjective)

Nominative, masculine, singular of sthita

sthita - standing, situated, abiding, firm, present

Past Passive Participle

From root sthā

Root: sthā (class 1)

निर्देहः (nirdehaḥ) - disembodied, without a body

(adjective)

Nominative, masculine, singular of nirdeha

nirdeha - without a body, disembodied

Compound type : bahuvrīhi (nis+deha)

• nis – out, without, away
  indeclinable
• deha – body, form
  noun (masculine)
  Root: dih (class 4)

भवति (bhavati) - becomes, is, exists

(verb)

3rd person , singular, active, present (lat) of bhū

present tense, active voice

root bhū (1st class), parasmaipada

Root: bhū (class 1)

श्रीमान् (śrīmān) - glorious, blessed, prosperous, opulent

(adjective)

Nominative, masculine, singular of śrīmat

śrīmat - glorious, splendid, prosperous, blessed, opulent

From śrī with matup suffix

सुखी (sukhī) - happy, blissful, joyful

(adjective)

Nominative, masculine, singular of sukhin

sukhin - happy, joyful, blissful, comfortable

From sukha with in suffix

तत्त्वैकभावनात् (tattvaikabhāvanāt) - from the contemplation/realization of the sole reality

(noun)

Ablative, masculine, singular of tattvaikabhāvana

tattvaikabhāvana - contemplation of the one reality, realization of the sole truth

Compound type : tatpuruṣa (tattvaika+bhāvana)

• tattva – truth, reality, principle, essence
  noun (neuter)
• eka – one, single, sole
  numeral (masculine)
• bhāvana – contemplation, realization, meditation, bringing into existence
  noun (neuter)
  Root: bhū (class 1)