योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-21, verse-29

मुक्तौ तु नान्यथा प्राप्तिरिति भावितचेतसः ।
स्वां दृष्टिं प्रविवृण्वन्ति स्वैरेव नियमभ्रमैः ॥ २९ ॥

muktau tu nānyathā prāptiriti bhāvitacetasaḥ ,
svāṃ dṛṣṭiṃ pravivṛṇvanti svaireva niyamabhramaiḥ 29

29. muktau tu na anyathā prāptiḥ iti bhāvitacetasaḥ
svāṃ dṛṣṭiṃ pravivṛṇvanti svaiḥ eva niyamabhramaiḥ

29. tu muktau anyathā prāptiḥ na iti bhāvitacetasaḥ
svāṃ dṛṣṭiṃ svaiḥ eva niyamabhramaiḥ pravivṛṇvanti

29. But, those whose minds are thus persuaded that "there is no other attainment of liberation (mokṣa) in any other way," they expound their own views using their very own delusive principles.

Words meanings summery:

• मुक्तौ (muktau) - in the state of final liberation (mokṣa) (in liberation, concerning liberation)

• तु (tu) - but, however, on the other hand

• न (na) - not, no

• अन्यथा (anyathā) - otherwise, in another way, differently

• प्राप्तिः (prāptiḥ) - attainment, acquisition, arrival

• इति (iti) - indicating reported thought (thus, in this manner, marking direct speech or thought)

• भावितचेतसः (bhāvitacetasaḥ) - those who are convinced of this idea (whose minds are convinced, whose thoughts are imbued)

• स्वाम् (svām) - their own

• दृष्टिम् (dṛṣṭim) - philosophical doctrine or theory (view, doctrine, sight)

• प्रविवृण्वन्ति (pravivṛṇvanti) - they expound, they elaborate, they reveal thoroughly

• स्वैः (svaiḥ) - by their own

• एव (eva) - emphasizes "their own" (indeed, only, very)

• नियमभ्रमैः (niyamabhramaiḥ) - by their own misguided principles or conceptual errors (by rules of error, by delusive rules, by misconceptions of principle)

Words meanings and morphology

मुक्तौ (muktau) - in the state of final liberation (mokṣa) (in liberation, concerning liberation)

(noun)

Locative, feminine, singular of mukti

mukti - liberation, release, freedom, salvation

from √muc (to release) + kti suffix

Root: muc (class 6)

तु (tu) - but, however, on the other hand

(indeclinable)

न (na) - not, no

(indeclinable)

अन्यथा (anyathā) - otherwise, in another way, differently

(indeclinable)

from anya (other) + thā suffix

प्राप्तिः (prāptiḥ) - attainment, acquisition, arrival

(noun)

Nominative, feminine, singular of prāpti

prāpti - attainment, acquisition, arrival, gain

from pra + √āp (to obtain) + ti suffix

Prefix: pra

Root: āp (class 5)

इति (iti) - indicating reported thought (thus, in this manner, marking direct speech or thought)

(indeclinable)

भावितचेतसः (bhāvitacetasaḥ) - those who are convinced of this idea (whose minds are convinced, whose thoughts are imbued)

(adjective)

Nominative, masculine, plural of bhāvitacetas

bhāvitacetas - one whose mind is affected/convinced/imbued

Compound type : bahuvrīhi (bhāvita+cetas)

• bhāvita – constituted, affected, accustomed, produced
  adjective (masculine)
  past passive participle
  from √bhū (to be, become) in causative sense, or bhāvayati (to cause to be)
  Root: bhū (class 1)
• cetas – mind, intellect, consciousness, heart
  noun (neuter)
  from √cit (to perceive, understand)
  Root: cit (class 1)

Note: Refers to the proponents mentioned in the previous verse.

स्वाम् (svām) - their own

(pronoun)

Accusative, feminine, singular of sva

sva - own, one's own, self

दृष्टिम् (dṛṣṭim) - philosophical doctrine or theory (view, doctrine, sight)

(noun)

Accusative, feminine, singular of dṛṣṭi

dṛṣṭi - sight, vision, view, doctrine, theory

from √dṛś (to see) + ti suffix

Root: dṛś (class 1)

प्रविवृण्वन्ति (pravivṛṇvanti) - they expound, they elaborate, they reveal thoroughly

(verb)

3rd person , plural, active, present indicative (laṭ) of pravivṛ

present active

from pra + vi + √vṛ (to cover, choose, or related to √vṛt 'to turn, proceed'). Here, likely 'to explain, to reveal.'

Prefixes: pra+vi

Root: vṛ (class 5)

स्वैः (svaiḥ) - by their own

(pronoun)

Instrumental, masculine, plural of sva

sva - own, one's own, self

एव (eva) - emphasizes "their own" (indeed, only, very)

(indeclinable)

particle

नियमभ्रमैः (niyamabhramaiḥ) - by their own misguided principles or conceptual errors (by rules of error, by delusive rules, by misconceptions of principle)

(noun)

Instrumental, masculine, plural of niyamabhrama

niyamabhrama - error in rules, delusive rules, misconception of principles

Compound type : tatpurusha (niyama+bhrama)

• niyama – rule, regulation, principle, restraint
  noun (masculine)
  from ni + √yam (to restrain, control)
  Prefix: ni
  Root: yam (class 1)
• bhrama – error, delusion, wandering, confusion
  noun (masculine)
  from √bhram (to wander, err)
  Root: bhram (class 1)