योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-19, verse-24

बालो बलवता स्वेन मनोरथविलासिना ।
मनसा तप्यते नित्यं ग्रीष्मेणेव वनस्थली ॥ २४ ॥

bālo balavatā svena manorathavilāsinā ,
manasā tapyate nityaṃ grīṣmeṇeva vanasthalī 24

24. bālaḥ balavatā svena manorathavilāsinā manasā
tapyate nityaṃ grīṣmeṇa iva vanasthalī

24. bālaḥ nityaṃ svena balavatā manorathavilāsinā manasā tapyate,
vanasthalī grīṣmeṇa iva (tapyate).

24. A child is constantly tormented by their own powerful mind, which indulges in desires, just as a forest (vanasthalī) is scorched by the summer heat.

Words meanings summery:

• बालः (bālaḥ) - a child, a boy

• बलवता (balavatā) - by the strong, by the powerful

• स्वेन (svena) - by his own

• मनोरथविलासिना (manorathavilāsinā) - by one who delights in fantasies/desires, indulging in desires

• मनसा (manasā) - by the mind

• तप्यते (tapyate) - is afflicted, suffers, is tormented

• नित्यं (nityaṁ) - always, constantly

• ग्रीष्मेण (grīṣmeṇa) - by summer

• इव (iva) - like, as

• वनस्थली (vanasthalī) - a forest grove, forest land

Words meanings and morphology

बालः (bālaḥ) - a child, a boy

(noun)

Nominative, masculine, singular of bāla

bāla - child, boy, young, innocent

बलवता (balavatā) - by the strong, by the powerful

(adjective)

Instrumental, masculine, singular of balavat

balavat - strong, powerful, mighty

स्वेन (svena) - by his own

(pronoun)

Instrumental, masculine, singular of sva

sva - own, one's own

मनोरथविलासिना (manorathavilāsinā) - by one who delights in fantasies/desires, indulging in desires

(adjective)

Instrumental, masculine, singular of manorathavilāsin

manorathavilāsin - indulging in desires, delighting in mental fancies

Compound type : Tatpurusha (manoratha+vilāsin)

• manoratha – mental desire, wish, fantasy
  noun (masculine)
• vilāsin – delighting in, sporting, charming, playful
  adjective (masculine)
  Agent noun
  Derived from root 'las' (to shine, play) with prefix 'vi'.
  Prefix: vi
  Root: las (class 1)

मनसा (manasā) - by the mind

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, thought, consciousness

तप्यते (tapyate) - is afflicted, suffers, is tormented

(verb)

3rd person , singular, passive, present indicative (laṭ) of tap

Passive/Middle voice form of root 'tap'.

Root: tap (class 4)

नित्यं (nityaṁ) - always, constantly

(indeclinable)

ग्रीष्मेण (grīṣmeṇa) - by summer

(noun)

Instrumental, masculine, singular of grīṣma

grīṣma - summer, hot season

इव (iva) - like, as

(indeclinable)

वनस्थली (vanasthalī) - a forest grove, forest land

(noun)

Nominative, feminine, singular of vanasthalī

vanasthalī - forest land, grove, woodland

Compound type : Tatpurusha (vana+sthalī)

• vana – forest, wood, grove
  noun (neuter)
• sthalī – land, ground, elevated ground
  noun (feminine)