योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-186, verse-51

सम्यग्ज्ञानवतो ज्ञस्य यथा भूऽतार्थदर्शिनः ।
बुद्धिर्भवति चिन्मात्ररूपा द्वैतैक्यवर्जिता ॥ ५१ ॥

samyagjñānavato jñasya yathā bhū'tārthadarśinaḥ ,
buddhirbhavati cinmātrarūpā dvaitaikyavarjitā 51

51. samyagjñānavataḥ jñasya yathā bhūtārthadarśinaḥ
buddhiḥ bhavati cinmātrarūpā dvaitaikyavarjitā

51. yathā samyagjñānavataḥ jñasya bhūtārthadarśinaḥ
buddhiḥ cinmātrarūpā dvaitaikyavarjitā bhavati

51. ...the intellect (buddhi) of a wise person (jña) who possesses perfect knowledge (samyagjñāna) and perceives reality as it truly is (bhūtārtha), becomes of the nature of pure consciousness (cinmātrarūpā), transcending both duality and unity.

Words meanings summery:

• सम्यग्ज्ञानवतः (samyagjñānavataḥ) - of a person endowed with complete and true knowledge (of one possessing perfect knowledge)

• ज्ञस्य (jñasya) - of one who is truly enlightened (of a knower, of a wise person)

• यथा (yathā) - in the manner that (just as, as, in the manner that)

• भूतार्थदर्शिनः (bhūtārthadarśinaḥ) - of one who discerns the ultimate truth (of one who sees reality, of one who perceives the true meaning)

• बुद्धिः (buddhiḥ) - the faculty of discernment (intellect, understanding, mind)

• भवति (bhavati) - (the intellect) transforms into (it becomes, it is)

• चिन्मात्ररूपा (cinmātrarūpā) - becoming consciousness itself (having the nature of pure consciousness, purely conscious)

• द्वैतैक्यवर्जिता (dvaitaikyavarjitā) - transcending the concepts of both duality and non-duality (devoid of duality and unity/oneness)

Words meanings and morphology

सम्यग्ज्ञानवतः (samyagjñānavataḥ) - of a person endowed with complete and true knowledge (of one possessing perfect knowledge)

(adjective)

Genitive, masculine, singular of samyagjñānavat

samyagjñānavat - possessing perfect knowledge

From samyagjñāna + matup suffix

Compound type : bahuvrīhi (samyak+jñāna+vat)

• samyak – right, correct, complete
  indeclinable
  From sam-añc
  Prefix: sam
  Root: añc (class 5)
• jñāna – knowledge, wisdom
  noun (neuter)
  From root jñā (to know)
  Root: jñā (class 9)
• vat – possessing, endowed with
  suffix
  Possessive suffix matup with m changed to v after vowels

Note: Qualifies jñasya.

ज्ञस्य (jñasya) - of one who is truly enlightened (of a knower, of a wise person)

(noun)

Genitive, masculine, singular of jña

jña - knowing, wise, a knower

From root jñā (to know)

Root: jñā (class 9)

यथा (yathā) - in the manner that (just as, as, in the manner that)

(indeclinable)

Note: Used to introduce the consequence described in the second half of the verse.

भूतार्थदर्शिनः (bhūtārthadarśinaḥ) - of one who discerns the ultimate truth (of one who sees reality, of one who perceives the true meaning)

(noun)

Genitive, masculine, singular of bhūtārthadarśin

bhūtārthadarśin - one who sees reality, a perceiver of truth

From bhūtārtha + dṛś (to see) + ṇini suffix

Compound type : tatpuruṣa (bhūta+artha+darśin)

• bhūta – become, real, true
  participle (neuter)
  Past Passive Participle
  From root bhū (to be)
  Root: bhū (class 1)
• artha – meaning, purpose, object, reality
  noun (masculine)
• darśin – seeing, beholding, a seer
  noun (masculine)
  From root dṛś (to see)
  Root: dṛś (class 1)

बुद्धिः (buddhiḥ) - the faculty of discernment (intellect, understanding, mind)

(noun)

Nominative, feminine, singular of buddhi

buddhi - intellect, perception, understanding

From root budh (to know, perceive)

Root: budh (class 1)

भवति (bhavati) - (the intellect) transforms into (it becomes, it is)

(verb)

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

Present (laṭ) 3rd singular active

Root: bhū (class 1)

चिन्मात्ररूपा (cinmātrarūpā) - becoming consciousness itself (having the nature of pure consciousness, purely conscious)

(adjective)

Nominative, feminine, singular of cinmātrarūpa

cinmātrarūpa - having the nature of pure consciousness

Compound type : karmadhāraya (cit+mātra+rūpa)

• cit – consciousness
  noun (feminine)
  Root: cit (class 1)
• mātra – only, merely
  indeclinable (neuter)
  Suffix indicating "only that"
  Root: mā (class 2)
• rūpa – form, nature, appearance
  noun (neuter)
  Root: rūp (class 10)

द्वैतैक्यवर्जिता (dvaitaikyavarjitā) - transcending the concepts of both duality and non-duality (devoid of duality and unity/oneness)

(adjective)

Nominative, feminine, singular of dvaitaikyavarjita

dvaitaikyavarjita - devoid of duality and unity

Compound type : dvandva-tatpuruṣa (dvaita+aikya+varjita)

• dvaita – duality, dualism
  noun (neuter)
  From dvi (two)
  Root: dvi
• aikya – unity, oneness, non-duality
  noun (neuter)
  From eka (one)
  Root: eka
• varjita – devoid of, abandoned, excluded
  participle
  Past Passive Participle
  From root vṛj (to avoid, abandon)
  Root: vṛj (class 1)