योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-56, verse-3

अथ चेदस्ति नास्तीदमिति निश्चयवानसि ।
तथापि भावनासङ्गः कथं युक्तश्चलाचले ॥ ३ ॥

atha cedasti nāstīdamiti niścayavānasi ,
tathāpi bhāvanāsaṅgaḥ kathaṃ yuktaścalācale 3

3. atha cet asti na asti idam iti niścayavān asi
tathāpi bhāvanāsaṅgaḥ katham yuktaḥ calācale

3. atha cet idam asti na asti iti niścayavān asi
tathāpi calācale bhāvanāsaṅgaḥ katham yuktaḥ

3. Now, if you possess certainty regarding whether this (world) exists or does not exist, then how can attachment to mental concepts be appropriate in this inherently unstable (reality)?

Words meanings summery:

• अथ (atha) - now, then, moreover, thus

• चेत् (cet) - if

• अस्ति (asti) - is, exists

• न (na) - not, no

• अस्ति (asti) - is, exists

• इदम् (idam) - referring to the world or phenomenal reality (this, this world, this reality)

• इति (iti) - thus, so, indicating direct speech or thought

• निश्चयवान् (niścayavān) - certain, possessing certainty, having conviction

• असि (asi) - you are

• तथापि (tathāpi) - even then, nevertheless, still

• भावनासङ्गः (bhāvanāsaṅgaḥ) - attachment to mental concepts/thoughts/feelings

• कथम् (katham) - how, why

• युक्तः (yuktaḥ) - appropriate, proper, joined, connected

• चलाचले (calācale) - referring to the transient and unstable nature of reality (in the fluctuating, in the unsteady, in the moving and unmoving)

Words meanings and morphology

अथ (atha) - now, then, moreover, thus

(indeclinable)

चेत् (cet) - if

(indeclinable)

अस्ति (asti) - is, exists

(verb)

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

Present active, 3rd person singular

root as, 2nd class Parasmaipada

Root: as (class 2)

न (na) - not, no

(indeclinable)

अस्ति (asti) - is, exists

(verb)

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

Present active, 3rd person singular

root as, 2nd class Parasmaipada

Root: as (class 2)

इदम् (idam) - referring to the world or phenomenal reality (this, this world, this reality)

(pronoun)

Nominative, neuter, singular of idam

idam - this

Note: Nominative or accusative singular neuter

इति (iti) - thus, so, indicating direct speech or thought

(indeclinable)

निश्चयवान् (niścayavān) - certain, possessing certainty, having conviction

(adjective)

Nominative, masculine, singular of niścayavat

niścayavat - possessing certainty, determined

Derivative from niścaya + matup suffix

Note: Nominative singular masculine form of niścayavat

असि (asi) - you are

(verb)

2nd person , singular, active, present (lat) of as

Present active, 2nd person singular

root as, 2nd class Parasmaipada

Root: as (class 2)

तथापि (tathāpi) - even then, nevertheless, still

(indeclinable)

tathā + api

भावनासङ्गः (bhāvanāsaṅgaḥ) - attachment to mental concepts/thoughts/feelings

(noun)

Nominative, masculine, singular of bhāvanāsaṅga

bhāvanāsaṅga - attachment to mental concepts or thoughts

Tatpurusha compound

Compound type : tatpurusha (bhāvanā+saṅga)

• bhāvanā – conception, imagination, contemplation, mental construct
  noun (feminine)
  Derivative of verb √bhū (to be)
  Root: bhū (class 1)
• saṅga – attachment, clinging, association
  noun (masculine)
  saṃ-√jaṅg (to cling)
  Prefix: sam
  Root: saṅg (class 1)

कथम् (katham) - how, why

(indeclinable)

युक्तः (yuktaḥ) - appropriate, proper, joined, connected

(adjective)

Nominative, masculine, singular of yukta

yukta - joined, connected, proper, appropriate, engaged

Past Passive Participle

root yuj + kta suffix

Root: yuj (class 7)

Note: Nominative singular masculine

चलाचले (calācale) - referring to the transient and unstable nature of reality (in the fluctuating, in the unsteady, in the moving and unmoving)

(adjective)

Locative, neuter, singular of calācala

calācala - moving and unmoving, unsteady, fluctuating, transient

Dvanda compound of cala and acala

Compound type : dvandva (cala+acala)

• cala – moving, unsteady, fleeting
  adjective (masculine)
  From root √cal (to move)
  Root: cal (class 1)
• acala – unmoving, steady
  adjective (masculine)
  Negation of cala
  Prefix: a
  Root: cal (class 1)

Note: Locative singular neuter (often used adverbially or substantively)