योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-150, verse-15

कष्टं दृश्योपलम्भेन भ्रान्तिमात्रात्मना सता ।
बालो वेतालकेनेव प्राज्ञोऽपि च्छलितो ह्यहो ॥ १५ ॥

kaṣṭaṃ dṛśyopalambhena bhrāntimātrātmanā satā ,
bālo vetālakeneva prājño'pi cchalito hyaho 15

15. kaṣṭam dṛśya-upalambhena bhrānti-mātra-ātmanā satā
bālaḥ vetālaken iva prājñaḥ api cchalitaḥ hi aho

15. aho kaṣṭam bhrānti-mātra-ātmanā satā dṛśya-upalambhena
prājñaḥ api bālaḥ vetālaken iva hi cchalitaḥ

15. Alas, how distressing! Even a wise person is indeed deluded by the perception of the visible world (dṛśya), which is in essence merely an illusion (bhrānti), just as a child is tricked by a goblin.

Words meanings summery:

• कष्टम् (kaṣṭam) - Alas, how distressing! (alas!, woe!, painful, distressing)

• दृश्य-उपलम्भेन (dṛśya-upalambhena) - by the perception of the visible world (dṛśya) (by the apprehension/perception of the visible)

• भ्रान्ति-मात्र-आत्मना (bhrānti-mātra-ātmanā) - which is in essence merely an illusion (bhrānti) (by that which is of the nature of mere illusion)

• सता (satā) - by being (of that nature) (by the existing, by the being)

• बालः (bālaḥ) - child (child, ignorant person)

• वेतालकेन् (vetālaken) - by a goblin (by a goblin, by a ghost)

• इव (iva) - like (like, as, as if)

• प्राज्ञः (prājñaḥ) - wise person (wise, intelligent, learned)

• अपि (api) - even (also, even, too)

• च्छलितः (cchalitaḥ) - is deluded (deluded, deceived, tricked)

• हि (hi) - indeed (indeed, certainly, for)

• अहो (aho) - Oh! (Oh! Ah! Alas!)

Words meanings and morphology

कष्टम् (kaṣṭam) - Alas, how distressing! (alas!, woe!, painful, distressing)

(indeclinable)

दृश्य-उपलम्भेन (dṛśya-upalambhena) - by the perception of the visible world (dṛśya) (by the apprehension/perception of the visible)

(noun)

Instrumental, masculine, singular of dṛśya-upalambha

dṛśya-upalambha - apprehension of the visible; perception of phenomena

Tatpuruṣa compound.

Compound type : tatpuruṣa (dṛśya+upalambha)

• dṛśya – visible, to be seen; the visible world, phenomenon
  adjective (neuter)
  Gerundive/Passive Future Participle
  Derived from root dṛś (to see).
  Root: dṛś (class 1)
• upalambha – apprehension, perception, acquisition, experience
  noun (masculine)
  From upa + labh (to obtain).
  Prefix: upa
  Root: labh (class 1)

भ्रान्ति-मात्र-आत्मना (bhrānti-mātra-ātmanā) - which is in essence merely an illusion (bhrānti) (by that which is of the nature of mere illusion)

(adjective)

Instrumental, masculine, singular of bhrānti-mātra-ātman

bhrānti-mātra-ātman - whose nature is mere illusion; having illusion only as its self

Bahuvrīhi compound, possibly with a Tatpuruṣa embedded (mātra-ātman).

Compound type : bahuvrīhi (bhrānti+mātra+ātman)

• bhrānti – illusion, error, delusion, confusion
  noun (feminine)
  From root bhram (to wander, to be confused).
  Root: bhram (class 1)
• mātra – mere, only, solely
  adjective (neuter)
• ātman – self, soul, spirit, essence
  noun (masculine)

Note: Agrees with 'dṛśya-upalambhena'.

सता (satā) - by being (of that nature) (by the existing, by the being)

(adjective)

Instrumental, masculine, singular of sant

sant - being, existing, good, virtuous; a being, a good person

Present Active Participle

Derived from root as (to be).

Root: as (class 2)

Note: Agrees with 'dṛśya-upalambhena' and further describes its nature.

बालः (bālaḥ) - child (child, ignorant person)

(noun)

Nominative, masculine, singular of bāla

bāla - child, young person, ignorant person, foolish

वेतालकेन् (vetālaken) - by a goblin (by a goblin, by a ghost)

(noun)

Instrumental, masculine, singular of vetālaka

vetālaka - goblin, ghost, vampire

Diminutive form of vetāla.

इव (iva) - like (like, as, as if)

(indeclinable)

प्राज्ञः (prājñaḥ) - wise person (wise, intelligent, learned)

(noun)

Nominative, masculine, singular of prājña

prājña - wise, intelligent, knowing; a wise man

From pra + jñā (to know).

Prefix: pra

Root: jñā (class 9)

अपि (api) - even (also, even, too)

(indeclinable)

च्छलितः (cchalitaḥ) - is deluded (deluded, deceived, tricked)

(adjective)

Nominative, masculine, singular of cchalita

cchalita - deceived, tricked, deluded, cheated

Past Passive Participle

Derived from root cchal (to deceive).

Root: cchal (class 1)

Note: Forms a passive construction with an implied 'is'.

हि (hi) - indeed (indeed, certainly, for)

(indeclinable)

अहो (aho) - Oh! (Oh! Ah! Alas!)

(indeclinable)