योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-28, verse-61

कौ तौ मे सदसद्भावौ यन्निष्ठं परितप्यते ।
इति निश्चयवत्स्वान्तं सम्यग्ज्ञानात्मनो मुनेः ॥ ६१ ॥

kau tau me sadasadbhāvau yanniṣṭhaṃ paritapyate ,
iti niścayavatsvāntaṃ samyagjñānātmano muneḥ 61

61. kau tau me sat-asat-bhāvau yat-niṣṭham paritapyate
iti niścayavat-svāntam samyak-jñāna-ātmanaḥ muneḥ

61. me tau kau sat-asat-bhāvau yat-niṣṭham paritapyate
iti samyak-jñāna-ātmanaḥ muneḥ niścayavat-svāntam

61. "What are these two, my states of being and non-being, by fixing on which one greatly suffers?" Such was the mind, firm in its resolve, of the sage (muni) whose inner self (ātman) was perfected knowledge.

Words meanings summery:

• कौ (kau) - who, which two

• तौ (tau) - those two

• मे (me) - to me, for me, my

• सत्-असत्-भावौ (sat-asat-bhāvau) - states of being and non-being, existence and non-existence

• यत्-निष्ठम् (yat-niṣṭham) - fixed upon which, centered on which

• परितप्यते (paritapyate) - suffers greatly, is tormented, is afflicted

• इति (iti) - thus, so, in this way (introduces or concludes a quote or thought)

• निश्चयवत्-स्वान्तम् (niścayavat-svāntam) - whose mind is possessed of certainty, whose inner self is resolute

• सम्यक्-ज्ञान-आत्मनः (samyak-jñāna-ātmanaḥ) - of the self (ātman) that is right knowledge, of the wise self

• मुनेः (muneḥ) - of the sage, of the ascetic

Words meanings and morphology

कौ (kau) - who, which two

(pronoun)

Nominative, masculine, dual of kim

kim - who, what, which

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

मे (me) - to me, for me, my

(pronoun)

singular of aham

aham - I

सत्-असत्-भावौ (sat-asat-bhāvau) - states of being and non-being, existence and non-existence

(noun)

Nominative, masculine, dual of sat-asat-bhāva

sat-asat-bhāva - states of being and non-being

Compound type : dvandva-tatpurusha (sat+asat+bhāva)

• sat – existing, being, real, good
  participle
  Present Active Participle
  Root: as (class 2)
• asat – non-existing, non-being, unreal, bad
  participle
  Present Active Participle (negative of sat)
  Prefix: a
  Root: as (class 2)
• bhāva – state, condition, existence, nature, feeling
  noun (masculine)
  Root: bhū (class 1)

यत्-निष्ठम् (yat-niṣṭham) - fixed upon which, centered on which

(adjective)

Nominative, neuter, singular of yat-niṣṭha

yat-niṣṭha - fixed upon which, centered on which

Compound type : tatpurusha (yat+niṣṭha)

• yat – which, that
  pronoun
• niṣṭha – standing in, devoted to, fixed upon, resting in
  adjective
  Derived from root sthā with prefix ni.
  Prefix: ni
  Root: sthā (class 1)

Note: Used here as a substantive referring to 'that which' (the mind/person).

परितप्यते (paritapyate) - suffers greatly, is tormented, is afflicted

(verb)

3rd person , singular, middle, present (laṭ) of paritap

Prefix: pari

Root: tap (class 4)

इति (iti) - thus, so, in this way (introduces or concludes a quote or thought)

(indeclinable)

निश्चयवत्-स्वान्तम् (niścayavat-svāntam) - whose mind is possessed of certainty, whose inner self is resolute

(noun)

Nominative, neuter, singular of niścayavat-svānta

niścayavat-svānta - whose mind is possessed of certainty/resolve

Compound type : bahuvrihi (niścayavat+svānta)

• niścayavat – possessing certainty, having firm resolve
  adjective
  Derived from 'niścaya' with possessive suffix '-vat'.
• svānta – one's own mind, heart, inner self
  noun (neuter)

Note: Here functioning as the subject 'the mind was' or an attribute 'the mind that was such'.

सम्यक्-ज्ञान-आत्मनः (samyak-jñāna-ātmanaḥ) - of the self (ātman) that is right knowledge, of the wise self

(noun)

Genitive, masculine, singular of samyak-jñāna-ātman

samyak-jñāna-ātman - the self (ātman) that is perfect knowledge

Compound type : tatpurusha (samyak+jñāna+ātman)

• samyak – right, proper, complete, perfect
  indeclinable
  Prefix: sam
  Root: añc (class 1)
• jñāna – knowledge, wisdom, understanding
  noun (neuter)
  Root: jñā (class 9)
• ātman – self, soul, spirit, essence, ego
  noun (masculine)

मुनेः (muneḥ) - of the sage, of the ascetic

(noun)

Genitive, masculine, singular of muni

muni - sage, ascetic, saint, inspired teacher