योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-33, verse-41

अहंकारपिशाचेन गृहीतो यो नराधमः ।
न शास्त्राणि न मन्त्राश्च तस्याभावस्य सिद्धये ॥ ४१ ॥

ahaṃkārapiśācena gṛhīto yo narādhamaḥ ,
na śāstrāṇi na mantrāśca tasyābhāvasya siddhaye 41

41. ahaṃkāra-piśācena gṛhītaḥ yaḥ nara-adhamaḥ na
śāstrāṇi na mantrāḥ ca tasya abhāvasya siddhaye

41. yaḥ nara-adhamaḥ ahaṃkāra-piśācena gṛhītaḥ,
tasya abhāvasya siddhaye na śāstrāṇi,
na mantrāḥ ca (santīti śeṣaḥ).

41. For the vile person who is seized by the fiend of ego (ahaṃkāra), neither scriptures nor mantras are effective for its (the ego's) cessation.

Words meanings summery:

• अहंकार-पिशाचेन (ahaṁkāra-piśācena) - by the ghoul of ego, by the fiend of egoism

• गृहीतः (gṛhītaḥ) - seized, caught, possessed

• यः (yaḥ) - whoever, who (masculine singular nominative)

• नर-अधमः (nara-adhamaḥ) - lowest among men, vile person

• न (na) - not, neither

• शास्त्राणि (śāstrāṇi) - scriptures, treatises (neuter plural nominative/accusative)

• न (na) - not, neither

• मन्त्राः (mantrāḥ) - mantras, sacred incantations (masculine plural nominative)

• च (ca) - and, also

• तस्य (tasya) - his, of him (masculine singular genitive)

• अभावस्य (abhāvasya) - of the non-existence, of the absence, of the removal

• सिद्धये (siddhaye) - for the accomplishment, for the success, for the cessation

Words meanings and morphology

अहंकार-पिशाचेन (ahaṁkāra-piśācena) - by the ghoul of ego, by the fiend of egoism

(noun)

Instrumental, masculine, singular of ahaṃkāra-piśāca

ahaṁkāra-piśāca - the demon/fiend of egoism (ahaṃkāra)

Compound type : tatpurusha (ahaṃkāra+piśāca)

• ahaṃkāra – egoism, sense of 'I', ego (ahaṃkāra)
  noun (masculine)
• piśāca – ghoul, demon, fiend
  noun (masculine)

गृहीतः (gṛhītaḥ) - seized, caught, possessed

(adjective)

Nominative, masculine, singular of gṛhīta

gṛhīta - seized, caught, accepted, possessed

Past Passive Participle

Derived from root √grah (to seize, take)

Root: grah (class 9)

यः (yaḥ) - whoever, who (masculine singular nominative)

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what (relative pronoun)

नर-अधमः (nara-adhamaḥ) - lowest among men, vile person

(noun)

Nominative, masculine, singular of nara-adhama

nara-adhama - lowest of men, a vile person

Compound type : tatpurusha (nara+adhama)

• nara – man, human being
  noun (masculine)
• adhama – lowest, mean, inferior
  adjective (masculine)

न (na) - not, neither

(indeclinable)

शास्त्राणि (śāstrāṇi) - scriptures, treatises (neuter plural nominative/accusative)

(noun)

Nominative, neuter, plural of śāstra

śāstra - scripture, treatise, science, sacred book

न (na) - not, neither

(indeclinable)

मन्त्राः (mantrāḥ) - mantras, sacred incantations (masculine plural nominative)

(noun)

Nominative, masculine, plural of mantra

mantra - sacred incantation, hymn, spell (mantra)

च (ca) - and, also

(indeclinable)

तस्य (tasya) - his, of him (masculine singular genitive)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, it (demonstrative pronoun)

अभावस्य (abhāvasya) - of the non-existence, of the absence, of the removal

(noun)

Genitive, masculine, singular of abhāva

abhāva - non-existence, absence, cessation, removal

सिद्धये (siddhaye) - for the accomplishment, for the success, for the cessation

(noun)

Dative, feminine, singular of siddhi

siddhi - accomplishment, success, perfection, cessation, supernatural power