योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-63, verse-71

यद्वै वेदनमात्रात्म तदंगावेदनक्षयम् ।
तद्वेदनं वेदनाया यदिष्टं तत्समाचरेत् ॥ ७१ ॥

yadvai vedanamātrātma tadaṃgāvedanakṣayam ,
tadvedanaṃ vedanāyā yadiṣṭaṃ tatsamācaret 71

71. yat vai vedanamātrātma tadaṅgāvedanakṣayam |
tat vedanam vedanāyāḥ yat iṣṭam tat samācaret

71. yat vai vedanamātrātma tat tadaṅgāvedanakṣayam
vedanāyāḥ yat iṣṭam tat vedanam samācaret

71. That which is truly of the nature of pure consciousness (vedana), its aspects are subject to perishing through lack of awareness. Therefore, whatever is desired for the sake of that consciousness (vedana) should be practiced.

Words meanings summery:

• यत् (yat) - which, what, that

• वै (vai) - indeed, truly, verily

• वेदनमात्रात्म (vedanamātrātma) - whose nature is mere knowing, consisting only of consciousness

• तदङ्गावेदनक्षयम् (tadaṅgāvedanakṣayam) - whose aspects are destroyed by non-knowing, whose constituents perish from lack of awareness

• तत् (tat) - that, it

• वेदनम् (vedanam) - knowing, knowledge, consciousness

• वेदनायाः (vedanāyāḥ) - of knowing, of consciousness, for knowing

• यत् (yat) - whatever, which

• इष्टम् (iṣṭam) - desired, wished, beloved, sacrificed

• तत् (tat) - that, it

• समाचरेत् (samācaret) - one should perform, one should practice, one should act

Words meanings and morphology

यत् (yat) - which, what, that

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that, who

Note: Refers to the ultimate reality.

वै (vai) - indeed, truly, verily

(indeclinable)

Note: Emphatic particle.

वेदनमात्रात्म (vedanamātrātma) - whose nature is mere knowing, consisting only of consciousness

(adjective)

Nominative, neuter, singular of vedanamātrātman

vedanamātrātman - whose nature is pure consciousness, consisting only of knowing, the very self of knowledge

Compound type : bahuvrīhi (vedana+mātra+ātman)

• vedana – knowing, knowledge, consciousness, perception
  noun (neuter)
  Derived from root vid (to know).
  Root: vid (class 2)
• mātra – only, merely, exclusively, consisting only of
  adjective (neuter)
• ātman – self, soul, spirit, essential nature, breath
  noun (masculine)

Note: The form `ātma` here is the stem used in compounds, and the final 'n' of `ātman` is dropped. The compound itself is masculine in default, but here functions adjectivally to neuter `yat`.

तदङ्गावेदनक्षयम् (tadaṅgāvedanakṣayam) - whose aspects are destroyed by non-knowing, whose constituents perish from lack of awareness

(adjective)

Nominative, neuter, singular of tadaṅgāvedanakṣaya

tadaṅgāvedanakṣaya - that whose parts/constituents are destroyed by non-knowing/ignorance

Compound type : bahuvrīhi (tad+aṅga+avedana+kṣaya)

• tad – that, it
  pronoun (neuter)
• aṅga – limb, body, part, constituent, essential property, aspect
  noun (neuter)
• avedana – non-knowing, ignorance, unconsciousness
  noun (neuter)
  Derived from a (negative prefix) + vedana (knowing).
  Prefix: a
  Root: vid (class 2)
• kṣaya – destruction, perishing, loss, decay
  noun (masculine)
  Derived from root kṣi (to destroy, to perish).
  Root: kṣi (class 1)

Note: Adjective modifying `yat` (implied `tat`). Ends in `am` for neuter nominative/accusative singular.

तत् (tat) - that, it

(pronoun)

Accusative, neuter, singular of tad

tad - that, that one, it

Note: Here, accusative object for `samācaret`, referring to `vedanam`.

वेदनम् (vedanam) - knowing, knowledge, consciousness

(noun)

Accusative, neuter, singular of vedana

vedana - knowing, knowledge, consciousness, perception, feeling

Derived from root vid (to know).

Root: vid (class 2)

Note: Object of `samācaret`.

वेदनायाः (vedanāyāḥ) - of knowing, of consciousness, for knowing

(noun)

Genitive, feminine, singular of vedanā

vedanā - knowledge, awareness, sensation, feeling

Derived from root vid (to know) with suffix yuṭ/ana.

Root: vid (class 2)

Note: Used here in a dative-like sense, 'for the sake of knowing/awareness'.

यत् (yat) - whatever, which

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that, who

Note: As relative pronoun, subject of `iṣṭam`.

इष्टम् (iṣṭam) - desired, wished, beloved, sacrificed

(adjective)

Nominative, neuter, singular of iṣṭa

iṣṭa - desired, wished, beloved, agreeable, sacrificed, worshipped

Past Passive Participle

From root yaj (to sacrifice, worship) with kta, or root iṣ (to wish, desire) with kta.

Root: iṣ (class 4)

Note: Neut. sg. Nom. of the past passive participle, predicate to `yat`.

तत् (tat) - that, it

(pronoun)

Accusative, neuter, singular of tad

tad - that, that one, it

Note: Correlative pronoun, object of `samācaret`.

समाचरेत् (samācaret) - one should perform, one should practice, one should act

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of samācar

Optative 3rd person singular from root car with prefixes sam and ā.

Prefixes: sam+ā

Root: car (class 1)

Note: Implies a recommendation or injunction.