योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-120, verse-19

अविनाभावनिष्ठत्वं प्रसिद्धं सुखदुःखयोः ।
तनुवासनमर्थो यः सेव्यते वा विवासनम् ॥ १९ ॥

avinābhāvaniṣṭhatvaṃ prasiddhaṃ sukhaduḥkhayoḥ ,
tanuvāsanamartho yaḥ sevyate vā vivāsanam 19

19. avinābhāvaniṣṭhatvam prasiddham sukhaduḥkhayoḥ
tanuvāsanam arthaḥ yaḥ sevyate vā vivāsanam

19. sukhaduḥkhayoḥ avinābhāvaniṣṭhatvam prasiddham.
yaḥ arthaḥ tanuvāsanam vā vivāsanam sevyate.

19. The inseparable connection between happiness and sorrow is well-established. An object is pursued either with weakened desires (vāsanam) or with complete detachment (vivāsanam).

Words meanings summery:

• अविनाभावनिष्ठत्वम् (avinābhāvaniṣṭhatvam) - the state of being inseparably connected, inseparability

• प्रसिद्धम् (prasiddham) - well-known, established, accomplished

• सुखदुःखयोः (sukhaduḥkhayoḥ) - of happiness and sorrow, in happiness and sorrow

• तनुवासनम् (tanuvāsanam) - having weak desires/impressions, meager attachment

• अर्थः (arthaḥ) - an object of desire or pursuit (object, purpose, meaning, wealth)

• यः (yaḥ) - who, which

• सेव्यते (sevyate) - is served, is pursued, is enjoyed

• वा (vā) - or, either

• विवासनम् (vivāsanam) - cessation of desire/impressions, dispassion, absence of subconscious tendencies

Words meanings and morphology

अविनाभावनिष्ठत्वम् (avinābhāvaniṣṭhatvam) - the state of being inseparably connected, inseparability

(noun)

Nominative, neuter, singular of avinābhāvaniṣṭhatva

avinābhāvaniṣṭhatva - inseparability, necessary connection

Abstract noun formed from `avinābhāva` (inseparable concomitance) + `niṣṭhā` (firm adherence) + `tva` (abstract suffix).

Compound type : tatpuruṣa (avinābhāva+niṣṭhā+tva)

• avinābhāva – inseparable concomitance, constant presence
  noun (masculine)
  nañ-tatpuruṣa from `vinābhāva` (separation).
  Prefixes: a+vi
  Root: bhū (class 1)
• niṣṭhā – firm adherence, devotion, completion, end
  noun (feminine)
  From root `sthā` with `ni`.
  Prefix: ni
  Root: sthā (class 1)
• tva – -ness, -hood (abstract suffix)
  suffix (neuter)
  Abstract noun suffix.

प्रसिद्धम् (prasiddham) - well-known, established, accomplished

(adjective)

Nominative, neuter, singular of prasiddha

prasiddha - well-known, established, accomplished

Past Passive Participle

From root `sidh` with prefix `pra`.

Prefix: pra

Root: sidh (class 4)

Note: Agrees with `avinābhāvaniṣṭhatvam`.

सुखदुःखयोः (sukhaduḥkhayoḥ) - of happiness and sorrow, in happiness and sorrow

(noun)

Genitive, neuter, dual of sukhaduḥkha

sukhaduḥkha - happiness and sorrow

Dvandva compound.

Compound type : dvandva (sukha+duḥkha)

• sukha – happiness, joy, pleasure
  noun (neuter)
• duḥkha – sorrow, suffering, pain
  noun (neuter)

तनुवासनम् (tanuvāsanam) - having weak desires/impressions, meager attachment

(adjective)

Nominative, neuter, singular of tanuvāsana

tanuvāsana - having weak desires/impressions

Bahuvrīhi compound, 'one for whom `vāsanā` is attenuated'.

Compound type : bahuvrīhi (tanu+vāsanā)

• tanu – thin, slender, weak, subtle
  adjective (neuter)
  Root: tan (class 8)
• vāsanā – impression, inclination, desire, subconscious tendency
  noun (feminine)
  From root `vas` (to dwell, to perfume).
  Root: vas (class 1)

Note: Adverbial use, describing the manner of pursuing an object.

अर्थः (arthaḥ) - an object of desire or pursuit (object, purpose, meaning, wealth)

(noun)

Nominative, masculine, singular of artha

artha - object, purpose, meaning, wealth

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - which, whatever

Nominative singular masculine of 'yad'.

सेव्यते (sevyate) - is served, is pursued, is enjoyed

(verb)

3rd person , singular, passive, present (lat) of sev

present middle indicative

3rd person singular, ātmanepada (passive form).

Root: sev (class 1)

वा (vā) - or, either

(indeclinable)

विवासनम् (vivāsanam) - cessation of desire/impressions, dispassion, absence of subconscious tendencies

(noun)

Nominative, neuter, singular of vivāsana

vivāsana - absence of `vāsanā`, dispassion, expulsion

From `vi` + `vāsanā` (negation or separation from `vāsanā`).

Compound type : tatpuruṣa (vi+vāsanā)

• vi – separation, absence, intensity
  prefix
  Often indicates separation or intensified action.
• vāsanā – impression, inclination, desire, subconscious tendency
  noun (feminine)
  From root `vas` (to dwell, to perfume).
  Root: vas (class 1)

Note: Functions adverbially, or describes the state of `arthaḥ`.