योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-53, verse-34

तमोरूपो हि संकल्पो नित्यं प्राकृतचेष्टया ।
परां कृपणतामेत्य प्रयाति कृमिकीटताम् ॥ ३४ ॥

tamorūpo hi saṃkalpo nityaṃ prākṛtaceṣṭayā ,
parāṃ kṛpaṇatāmetya prayāti kṛmikīṭatām 34

34. tamo-rūpaḥ hi saṅkalpaḥ nityaṃ prākṛta-ceṣṭayā
parām kṛpaṇatām etya prayāti kṛmi-kīṭatām

34. hi tamo-rūpaḥ saṅkalpaḥ nityaṃ prākṛta-ceṣṭayā
parām kṛpaṇatām etya kṛmi-kīṭatām prayāti

34. Indeed, the dark-natured will (saṅkalpa), constantly engaging in worldly activity (prākṛta-ceṣṭā), attains extreme wretchedness and descends to the state of worms and insects.

Words meanings summery:

• तमो-रूपः (tamo-rūpaḥ) - dark-natured (having the form of tamas, dark-natured)

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

• सङ्कल्पः (saṅkalpaḥ) - will (saṅkalpa) (will, intention, determination)

• नित्यं (nityaṁ) - constantly (constantly, perpetually, always)

• प्राकृत-चेष्टया (prākṛta-ceṣṭayā) - by worldly activity (prākṛta-ceṣṭā) (by worldly activity, by natural endeavor, by activity of prakṛti)

• पराम् (parām) - extreme (highest, extreme, supreme)

• कृपणताम् (kṛpaṇatām) - wretchedness (wretchedness, miserliness, meanness)

• एत्य (etya) - having attained (having gone, having attained, having reached)

• प्रयाति (prayāti) - descends to / attains (the state of) (goes forth, proceeds, passes into, attains)

• कृमि-कीटताम् (kṛmi-kīṭatām) - the state of worms and insects

Words meanings and morphology

तमो-रूपः (tamo-rūpaḥ) - dark-natured (having the form of tamas, dark-natured)

(adjective)

Nominative, masculine, singular of tamo-rūpa

tamo-rūpa - having the form of darkness, dark-natured, of the nature of tamas

Compound type : tatpuruṣa (tamas+rūpa)

• tamas – darkness, ignorance, inertia (one of the three guṇas)
  noun (neuter)
  Root: tam (class 4)
• rūpa – form, shape, nature, appearance
  noun (neuter)
  Root: rūp (class 1)

Note: Agrees with `saṅkalpaḥ`.

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

(indeclinable)

Note: Emphatic particle.

सङ्कल्पः (saṅkalpaḥ) - will (saṅkalpa) (will, intention, determination)

(noun)

Nominative, masculine, singular of saṅkalpa

saṅkalpa - will, intention, determination, resolve, conception, desire

Prefix: sam

Root: kḷp (class 1)

Note: Subject of the sentence.

नित्यं (nityaṁ) - constantly (constantly, perpetually, always)

(indeclinable)

Note: Used adverbially.

प्राकृत-चेष्टया (prākṛta-ceṣṭayā) - by worldly activity (prākṛta-ceṣṭā) (by worldly activity, by natural endeavor, by activity of prakṛti)

(noun)

Instrumental, feminine, singular of prākṛta-ceṣṭā

prākṛta-ceṣṭā - worldly activity, natural endeavor, activity of prakṛti

Compound type : tatpuruṣa (prākṛta+ceṣṭā)

• prākṛta – natural, ordinary, common, worldly, relating to prakṛti
  adjective (masculine)
  Prefix: pra
  Root: kṛ (class 8)
• ceṣṭā – activity, movement, exertion, effort, endeavor
  noun (feminine)
  Root: ceṣṭ (class 1)

Note: Refers to actions driven by the material nature (prakṛti).

पराम् (parām) - extreme (highest, extreme, supreme)

(adjective)

Accusative, feminine, singular of para

para - other, distant, supreme, highest, extreme

Note: Agrees with `kṛpaṇatām`.

कृपणताम् (kṛpaṇatām) - wretchedness (wretchedness, miserliness, meanness)

(noun)

Accusative, feminine, singular of kṛpaṇatā

kṛpaṇatā - wretchedness, miserliness, meanness, poverty

suffix -tā for abstract noun

एत्य (etya) - having attained (having gone, having attained, having reached)

(indeclinable)

absolutive (gerund)

suffix -ya, often with a prefix, but `etya` is a common form for `i`

Root: i (class 2)

प्रयाति (prayāti) - descends to / attains (the state of) (goes forth, proceeds, passes into, attains)

(verb)

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

present active third person singular

Prefix: pra

Root: yā (class 2)

कृमि-कीटताम् (kṛmi-kīṭatām) - the state of worms and insects

(noun)

Accusative, feminine, singular of kṛmi-kīṭatā

kṛmi-kīṭatā - the state of worms and insects

Compound type : dvandva-tatpuruṣa (kṛmi+kīṭa+tā)

• kṛmi – worm, insect
  noun (masculine)
• kīṭa – insect, worm
  noun (masculine)
• tā – state, condition, nature (suffix forming abstract feminine nouns)
  suffix (feminine)