योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-7, verse-36

एकाभावे द्वयोरेव सिद्धिर्भवति नात्र हि ।
द्वित्वैक्यद्रष्टृदृश्यत्वक्षये सदवशिष्यते ॥ ३६ ॥

ekābhāve dvayoreva siddhirbhavati nātra hi ,
dvitvaikyadraṣṭṛdṛśyatvakṣaye sadavaśiṣyate 36

36. eka-abhāve dvayoḥ eva siddhiḥ bhavati na atra hi
dvitvaikya-draṣṭṛdṛśyatva-kṣaye sat avaśiṣyate

36. eka-abhāve atra hi dvayoḥ siddhiḥ eva na bhavati.
dvitvaikya-draṣṭṛdṛśyatva-kṣaye (sati) sat eva avaśiṣyate.

36. Indeed, in the absence of one, the realization of both (duality and unity, or seer and seen) does not occur here. When duality (dvitva), unity (aikya), the state of being a perceiver (draṣṭṛtva), and the state of being perceived (dṛśyatva) are all destroyed, only the Existent (sat) remains.

Words meanings summery:

• एक-अभावे (eka-abhāve) - in the absence of one

• द्वयोः (dvayoḥ) - of the two

• एव (eva) - certainly, only, indeed

• सिद्धिः (siddhiḥ) - realization, accomplishment, attainment

• भवति (bhavati) - happens, occurs, becomes

• न (na) - not, no

• अत्र (atra) - here, in this place

• हि (hi) - indeed, surely, for, because

• द्वित्वैक्य-द्रष्टृदृश्यत्व-क्षये (dvitvaikya-draṣṭṛdṛśyatva-kṣaye) - in the destruction of duality, unity, seer-ship, and seen-ness

• सत् (sat) - The ultimate reality (brahman) (the Existent, Reality, being)

• अवशिष्यते (avaśiṣyate) - remains, is left over

Words meanings and morphology

एक-अभावे (eka-abhāve) - in the absence of one

(noun)

Locative, masculine, singular of ekābhāva

ekābhāva - absence of one

Compound type : tatpurusha (eka+abhāva)

• eka – one, single
  adjective (masculine)
• abhāva – absence, non-existence
  noun (masculine)
  Prefix: a
  Root: bhū (class 1)

द्वयोः (dvayoḥ) - of the two

(numeral)

एव (eva) - certainly, only, indeed

(indeclinable)

सिद्धिः (siddhiḥ) - realization, accomplishment, attainment

(noun)

Nominative, feminine, singular of siddhi

siddhi - accomplishment, success, realization, perfection

Root: sidh (class 4)

भवति (bhavati) - happens, occurs, becomes

(verb)

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

Root: bhū (class 1)

न (na) - not, no

(indeclinable)

अत्र (atra) - here, in this place

(indeclinable)

हि (hi) - indeed, surely, for, because

(indeclinable)

द्वित्वैक्य-द्रष्टृदृश्यत्व-क्षये (dvitvaikya-draṣṭṛdṛśyatva-kṣaye) - in the destruction of duality, unity, seer-ship, and seen-ness

(noun)

Locative, masculine, singular of dvitvaikya-draṣṭṛdṛśyatva-kṣaya

dvitvaikya-draṣṭṛdṛśyatva-kṣaya - destruction of duality, unity, seer-ship, and seen-ness

Compound type : dvandva-tatpurusha (dvitva+aikya+draṣṭṛtva+dṛśyatva+kṣaya)

• dvitva – duality, twoness
  noun (neuter)
  derived from dvi (two) + tva (suffix)
• aikya – unity, oneness, identity
  noun (neuter)
  derived from eka (one) + ya (suffix)
• draṣṭṛtva – the state of being a seer, percipience
  noun (neuter)
  derived from draṣṭṛ (seer) + tva (suffix)
• dṛśyatva – the state of being seen, perceptibility
  noun (neuter)
  derived from dṛśya (to be seen) + tva (suffix)
• kṣaya – destruction, decay, loss, end
  noun (masculine)
  Root: kṣi (class 1)

सत् (sat) - The ultimate reality (brahman) (the Existent, Reality, being)

(noun)

neuter, singular of sat

sat - existing, real, true, good; the existent, reality, truth

Present Active Participle

present participle of 'as' (to be), used as a noun

Root: as (class 2)

अवशिष्यते (avaśiṣyate) - remains, is left over

(verb)

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

Prefix: ava

Root: śiṣ (class 7)