योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-78, verse-16

मनःस्पन्दोपशान्त्यायं संसारः प्रविलीयते ।
सूर्यालोकपरिस्पन्दशान्तौ व्यवहृतिर्यथा ॥ १६ ॥

manaḥspandopaśāntyāyaṃ saṃsāraḥ pravilīyate ,
sūryālokaparispandaśāntau vyavahṛtiryathā 16

16. manaḥspandopaśāntyā ayam saṃsāraḥ pravilīyate
sūryālokaparispandaśāntau vyavahṛtiḥ yathā

16. ayam saṃsāraḥ manaḥspandopaśāntyā pravilīyate
yathā sūryālokaparispandaśāntau vyavahṛtiḥ

16. With the complete cessation of the mind's pulsation, this cycle of rebirth (saṃsāra) completely dissolves, just as worldly activity ceases with the calming of the sun's light and its movement.

Words meanings summery:

• मनःस्पन्दोपशान्त्या (manaḥspandopaśāntyā) - by the cessation of the mind's pulsation

• अयम् (ayam) - this, he

• संसारः (saṁsāraḥ) - cycle of rebirth, transmigration, worldly existence

• प्रविलीयते (pravilīyate) - it dissolves completely, it disappears entirely

• सूर्यालोकपरिस्पन्दशान्तौ (sūryālokaparispandaśāntau) - upon the cessation of the movement of sunlight

• व्यवहृतिः (vyavahṛtiḥ) - worldly activity, transaction, usage, practice

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

Words meanings and morphology

मनःस्पन्दोपशान्त्या (manaḥspandopaśāntyā) - by the cessation of the mind's pulsation

(noun)

Instrumental, feminine, singular of manaḥspandopaśānti

manaḥspandopaśānti - cessation of the mind's pulsation

Compound type : tatpuruṣa (manas+spanda+upaśānti)

• manas – mind, intellect, heart
  noun (neuter)
  From root 'man' (to think)
  Root: man (class 4)
• spanda – vibration, throbbing, pulsation, movement
  noun (masculine)
  Derived from root 'spand' (to tremble, vibrate)
  Root: spand (class 1)
• upaśānti – cessation, tranquillity, calming, pacification
  noun (feminine)
  Derived from root 'śam' (to be calm) with prefix 'upa' (near, towards)
  Prefix: upa
  Root: śam (class 4)

अयम् (ayam) - this, he

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one

Note: Agrees with 'saṃsāraḥ'.

संसारः (saṁsāraḥ) - cycle of rebirth, transmigration, worldly existence

(noun)

Nominative, masculine, singular of saṃsāra

saṁsāra - cycle of rebirth, transmigration, worldly existence, wandering through

Derived from root 'sṛ' (to flow, move) with prefix 'sam' (together, completely)

Prefix: sam

Root: sṛ (class 1)

Note: Subject of 'pravilīyate'.

प्रविलीयते (pravilīyate) - it dissolves completely, it disappears entirely

(verb)

3rd person , singular, passive, present (laṭ) of vilī

From root 'lī' (to melt, dissolve) with prefixes 'pra' and 'vi'

Prefixes: pra+vi

Root: lī (class 4)

सूर्यालोकपरिस्पन्दशान्तौ (sūryālokaparispandaśāntau) - upon the cessation of the movement of sunlight

(noun)

Locative, feminine, singular of sūryālokaparispandaśānti

sūryālokaparispandaśānti - cessation of the vibration/movement of sun's light

Compound type : tatpuruṣa (sūrya+āloka+parispanda+śānti)

• sūrya – sun, sun god
  noun (masculine)
• āloka – light, seeing, looking
  noun (masculine)
  Derived from root 'lok' (to see, perceive) with prefix 'ā'
  Prefix: ā
  Root: lok (class 10)
• parispanda – vibration, throbbing, pulsation, movement
  noun (masculine)
  Derived from root 'spand' (to tremble, vibrate) with prefix 'pari'
  Prefix: pari
  Root: spand (class 1)
• śānti – peace, tranquillity, cessation, calm
  noun (feminine)
  Derived from root 'śam' (to be calm)
  Root: śam (class 4)

Note: Used in a locative absolute construction, indicating 'when this happens'.

व्यवहृतिः (vyavahṛtiḥ) - worldly activity, transaction, usage, practice

(noun)

Nominative, feminine, singular of vyavahṛti

vyavahṛti - activity, transaction, usage, practice, worldly affair

Derived from root 'hṛ' (to carry, take) with prefixes 'vi' and 'ava'

Prefixes: vi+ava

Root: hṛ (class 1)

Note: The verb 'pravilīyate' (dissolves) is implied for this clause as well.

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

(indeclinable)