योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-7, verse-36

भावाभावैरपर्यन्तैः सुखदुःखदशाशतैः ।
वैपरीत्यं प्रयात्येवमजस्त्रं जागती स्थितिः ॥ ३६ ॥

bhāvābhāvairaparyantaiḥ sukhaduḥkhadaśāśataiḥ ,
vaiparītyaṃ prayātyevamajastraṃ jāgatī sthitiḥ 36

36. bhāvābhāvaiḥ aparyantaiḥ sukhaduḥkhadaśāśataiḥ
vaiparītyam prayāti evam ajasram jāgatī sthitiḥ

36. aparyantaiḥ bhāvābhāvaiḥ sukhaduḥkhadaśāśataiḥ ca evam jāgatī sthitiḥ ajasram vaiparītyam prayāti.

36. Through endless states of existence and non-existence, and hundreds of conditions of happiness and sorrow, the worldly situation thus constantly experiences reversal and change.

Words meanings summery:

• भावाभावैः (bhāvābhāvaiḥ) - by existences and non-existences, by being and non-being

• अपर्यन्तैः (aparyantaiḥ) - by endless, by boundless, by unlimited

• सुखदुःखदशाशतैः (sukhaduḥkhadaśāśataiḥ) - by hundreds of states of happiness and sorrow

• वैपरीत्यम् (vaiparītyam) - reversal, contrariety, opposite state, perversity

• प्रयाति (prayāti) - goes, proceeds, attains, reaches

• एवम् (evam) - thus, in this manner, so

• अजस्रम् (ajasram) - constantly, perpetually, unceasingly

• जागती (jāgatī) - worldly, terrestrial, pertaining to the world

• स्थितिः (sthitiḥ) - state, condition, situation, existence, steadfastness

Words meanings and morphology

भावाभावैः (bhāvābhāvaiḥ) - by existences and non-existences, by being and non-being

(noun)

Instrumental, masculine, plural of bhāvābhāva

bhāvābhāva - existence and non-existence, being and non-being

Compound type : dvandva (bhāva+abhāva)

• bhāva – existence, being, state, condition, sentiment
  noun (masculine)
  From root bhū (to be, to become).
  Root: bhū (class 1)
• abhāva – non-existence, non-being, absence, annihilation
  noun (masculine)
  From a- (negation) + bhāva (existence).
  Prefix: a
  Root: bhū (class 1)

अपर्यन्तैः (aparyantaiḥ) - by endless, by boundless, by unlimited

(adjective)

Instrumental, masculine, plural of aparyanta

aparyanta - endless, boundless, infinite, unlimited

From a- (negation) + paryanta (ending, boundary).

Compound type : tatpuruṣa (a+paryanta)

• a – not, non-
  indeclinable
  Negative prefix
• paryanta – end, limit, boundary, edge
  noun (masculine)
  Prefix: pari

सुखदुःखदशाशतैः (sukhaduḥkhadaśāśataiḥ) - by hundreds of states of happiness and sorrow

(noun)

Instrumental, neuter, plural of sukhaduḥkhadaśāśata

sukhaduḥkhadaśāśata - hundreds of states of happiness and sorrow

Compound type : tatpuruṣa (sukha+duḥkha+daśā+śata)

• sukha – happiness, joy, pleasure, comfort
  noun (neuter)
• duḥkha – sorrow, pain, suffering, misery
  noun (neuter)
• daśā – state, condition, situation, period of life
  noun (feminine)
• śata – hundred
  noun (neuter)

वैपरीत्यम् (vaiparītyam) - reversal, contrariety, opposite state, perversity

(noun)

Accusative, neuter, singular of vaiparītya

vaiparītya - contrariety, opposition, reversal, change to the opposite

Derived from viparīta (opposite, inverted) + -ya (suffix for abstract noun).

प्रयाति (prayāti) - goes, proceeds, attains, reaches

(verb)

3rd person , singular, active, present indicative (laṭ) of prā-yā

Prefix: pra

Root: yā (class 2)

एवम् (evam) - thus, in this manner, so

(indeclinable)

अजस्रम् (ajasram) - constantly, perpetually, unceasingly

(indeclinable)

Note: Used adverbially here.

जागती (jāgatī) - worldly, terrestrial, pertaining to the world

(adjective)

Nominative, feminine, singular of jāgatī

jāgatī - worldly, terrestrial, pertaining to the waking state or the world

Feminine form of jāgata, derived from jagat (world).

स्थितिः (sthitiḥ) - state, condition, situation, existence, steadfastness

(noun)

Nominative, feminine, singular of sthiti

sthiti - standing, existing, position, state, condition, permanence, steadfastness

From root sthā (to stand).

Root: sthā (class 1)