योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-50, verse-56

भोगाभोगतिरस्कारैः कार्श्यं नेयं शनैर्मनः ।
रसापहारैस्तज्ज्ञेन कालेनाजीर्णपर्णवत् ॥ ५६ ॥

bhogābhogatiraskāraiḥ kārśyaṃ neyaṃ śanairmanaḥ ,
rasāpahāraistajjñena kālenājīrṇaparṇavat 56

56. bhogābhogatiraskāraiḥ kārśyam neyam śanaiḥ manaḥ
| rasāpahāraiḥ tajjñena kālena ajīrṇaparṇavat ||

56. tajjñena manaḥ bhogābhogatiraskāraiḥ rasāpahāraiḥ
śanaiḥ kārśyam neyam kālena ajīrṇaparṇavat

56. The mind (manas) should be gradually attenuated (kārśyaṃ niyam) by one who understands this, through the rejection of abundant worldly enjoyments and by depriving it of its flavors and attractions, just as a decaying leaf is withered by time.

Words meanings summery:

• भोगाभोगतिरस्कारैः (bhogābhogatiraskāraiḥ) - by the rejections of the expanse of enjoyments, by disdaining abundant pleasures

• कार्श्यम् (kārśyam) - leanness, thinness, emaciation, attenuation

• नेयम् (neyam) - should be led, to be guided, to be brought

• शनैः (śanaiḥ) - slowly, gradually

• मनः (manaḥ) - the mind (manas)

• रसापहारैः (rasāpahāraiḥ) - by deprivations of flavor/essence, by removing its attractions

• तज्ज्ञेन (tajjñena) - by one who knows that (truth), by an expert in it

• कालेन (kālena) - by time

• अजीर्णपर्णवत् (ajīrṇaparṇavat) - like a decaying leaf, like a withered leaf

Words meanings and morphology

भोगाभोगतिरस्कारैः (bhogābhogatiraskāraiḥ) - by the rejections of the expanse of enjoyments, by disdaining abundant pleasures

(noun)

Instrumental, masculine, plural of bhogābhogatiraskāra

bhogābhogatiraskāra - rejection/disdain of the expanse of enjoyments

Compound type : tatpuruṣa (bhoga+ābhoga+tiraskāra)

• bhoga – enjoyment, pleasure, experience
  noun (masculine)
  from root bhuj
  Root: bhuj (class 7)
• ābhoga – fullness, expanse, abundance
  noun (masculine)
  from ā-bhuj
  Prefix: ā
  Root: bhuj (class 7)
• tiraskāra – disregard, contempt, rejection, scorn
  noun (masculine)
  from tiras-kṛ
  Prefix: tiras
  Root: kṛ (class 8)

कार्श्यम् (kārśyam) - leanness, thinness, emaciation, attenuation

(noun)

Accusative, neuter, singular of kārśya

kārśya - leanness, thinness, emaciation

from kṛśa + yañ (abstract suffix)

नेयम् (neyam) - should be led, to be guided, to be brought

(adjective)

Nominative, neuter, singular of neya

neya - to be led, to be guided, to be brought

Gerundive

from root nī

Root: nī (class 1)

शनैः (śanaiḥ) - slowly, gradually

(indeclinable)

मनः (manaḥ) - the mind (manas)

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, understanding, conscience

from root man

Root: man (class 4)

रसापहारैः (rasāpahāraiḥ) - by deprivations of flavor/essence, by removing its attractions

(noun)

Instrumental, masculine, plural of rasāpahāra

rasāpahāra - deprivation of juice/sap/flavor/essence, stealing of relish

Compound type : tatpuruṣa (rasa+apahāra)

• rasa – juice, sap, essence, taste, relish, attraction
  noun (masculine)
• apahāra – taking away, removal, abduction, theft
  noun (masculine)
  from apa-hṛ
  Prefix: apa
  Root: hṛ (class 1)

तज्ज्ञेन (tajjñena) - by one who knows that (truth), by an expert in it

(noun)

Instrumental, masculine, singular of tajjña

tajjña - knowing that, skilled in that, an expert

Compound type : tatpuruṣa (tad+jña)

• tad – that, referring to the subject at hand
  pronoun (neuter)
• jña – knowing, conversant with, knower
  adjective (masculine)
  from root jñā
  Root: jñā (class 9)

कालेन (kālena) - by time

(noun)

Instrumental, masculine, singular of kāla

kāla - time, period, season

अजीर्णपर्णवत् (ajīrṇaparṇavat) - like a decaying leaf, like a withered leaf

(indeclinable)

from ajīrṇaparṇa + -vat (similative suffix)

Compound type : bahuvrīhi (a+jīrṇa+parṇa+vat)

• a – not, un-
  indeclinable
  negative prefix
• jīrṇa – decayed, withered, worn out, old
  adjective (neuter)
  Past Passive Participle
  from root jṝ
  Root: jṝ (class 9)
• parṇa – leaf
  noun (neuter)
• vat – like, as if
  suffix
  similative suffix

Note: similative indeclinable