योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-63, verse-21

संसारशतपर्यन्ते रुद्रः सोऽहमहं स्थितः ।
अस्मिन्संसारसंरम्भे स्वमनोमात्रसंभ्रमे ॥ २१ ॥

saṃsāraśataparyante rudraḥ so'hamahaṃ sthitaḥ ,
asminsaṃsārasaṃrambhe svamanomātrasaṃbhrame 21

21. saṃsāraśataparyante rudraḥ saḥ aham aham sthitaḥ
asmin saṃsārasaṃrambhe svamanomātrasaṃbhrame

21. aham saḥ rudraḥ saṃsāraśataparyante sthitaḥ aham
asmin svamanomātrasaṃbhrame saṃsārasaṃrambhe

21. At the culmination of countless cycles of transmigration (saṃsāra), I remain as that very Rudra. I am present amidst this agitation of saṃsāra, which is merely a delusion generated by one's own mind.

Words meanings summery:

• संसारशतपर्यन्ते (saṁsāraśataparyante) - at the end of hundreds of transmigrations/existences

• रुद्रः (rudraḥ) - Rudra

• सः (saḥ) - that (he)

• अहम् (aham) - I

• अहम् (aham) - I

• स्थितः (sthitaḥ) - situated, standing, remaining

• अस्मिन् (asmin) - in this

• संसारसंरम्भे (saṁsārasaṁrambhe) - in the agitation/commotion of saṃsāra (transmigration)

• स्वमनोमात्रसंभ्रमे (svamanomātrasaṁbhrame) - in the delusion that is merely one's own mind

Words meanings and morphology

संसारशतपर्यन्ते (saṁsāraśataparyante) - at the end of hundreds of transmigrations/existences

(noun)

Locative, masculine, singular of saṃsāraśataparyanta

saṁsāraśataparyanta - the end of hundreds of transmigrations/existences

Compound type : tatpuruṣa (saṃsāraśata+paryanta)

• saṃsāraśata – hundreds of saṃsāras, a hundred transmigrations
  noun (neuter)
• paryanta – end, limit, conclusion
  noun (masculine)

रुद्रः (rudraḥ) - Rudra

(proper noun)

Nominative, masculine, singular of rudra

rudra - Rudra (a Vedic deity), a roarer, a howler

Root: rud (class 2)

सः (saḥ) - that (he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, myself

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, myself

स्थितः (sthitaḥ) - situated, standing, remaining

(adjective)

Nominative, masculine, singular of sthita

sthita - standing, situated, firm, existing

Past Passive Participle

Derived from root sthā (to stand)

Root: sthā (class 1)

अस्मिन् (asmin) - in this

(pronoun)

Locative, masculine, singular of idam

idam - this

संसारसंरम्भे (saṁsārasaṁrambhe) - in the agitation/commotion of saṃsāra (transmigration)

(noun)

Locative, masculine, singular of saṃsārasaṃrambha

saṁsārasaṁrambha - agitation/commotion of saṃsāra

Compound type : tatpuruṣa (saṃsāra+saṃrambha)

• saṃsāra – transmigration, wandering through successive states of existence, cycle of birth and death
  noun (masculine)
  Prefix: sam
  Root: sṛ (class 1)
• saṃrambha – agitation, commotion, fury, impetuosity
  noun (masculine)
  Prefix: sam
  Root: rabh (class 1)

स्वमनोमात्रसंभ्रमे (svamanomātrasaṁbhrame) - in the delusion that is merely one's own mind

(noun)

Locative, masculine, singular of svamanomātrasaṃbhrama

svamanomātrasaṁbhrama - delusion consisting merely of one's own mind

Compound type : tatpuruṣa (sva+manas+mātra+saṃbhrama)

• sva – one's own, self
  adjective
• manas – mind, intellect, understanding
  noun (neuter)
  Root: man (class 4)
• mātra – merely, only, consisting only of
  indeclinable (neuter)
• saṃbhrama – delusion, confusion, agitation, bewilderment
  noun (masculine)
  Prefix: sam
  Root: bhram (class 1)