योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-22, verse-9

कर्तव्यं किं मया कष्टं परत्रेत्यतिदारुणम् ।
अप्रतीकारयोग्यं हि वर्धते वार्धके भयम् ॥ ९ ॥

kartavyaṃ kiṃ mayā kaṣṭaṃ paratretyatidāruṇam ,
apratīkārayogyaṃ hi vardhate vārdhake bhayam 9

9. kartavyam kim mayā kaṣṭam paratra iti atidāruṇam
apratīkārayogyam hi vardhate vārdhake bhayam

9. hi vārdhake atidāruṇam apratīkārayogyam bhayam
"kartavyam kim mayā kaṣṭam paratra" iti vardhate

9. Indeed, in old age (vārdhake), an extremely terrible and irremediable fear (bhayam) increases, (manifesting as the thought): "What painful (karma) must I do for the next world (paratra)?"

Words meanings summery:

• कर्तव्यम् (kartavyam) - to be done, duty, action

• किम् (kim) - what, which

• मया (mayā) - by me

• कष्टम् (kaṣṭam) - painful (action or consequence) (difficult, painful, suffering, trouble)

• परत्र (paratra) - in the next world, hereafter

• इति (iti) - marks the end of a quotation or thought (thus, so)

• अतिदारुणम् (atidāruṇam) - very terrible, extremely dreadful

• अप्रतीकारयोग्यम् (apratīkārayogyam) - not suitable for remedy, irremediable, incurable

• हि (hi) - indeed, surely, certainly

• वर्धते (vardhate) - increases, grows, thrives

• वार्धके (vārdhake) - in old age

• भयम् (bhayam) - fear, dread

Words meanings and morphology

कर्तव्यम् (kartavyam) - to be done, duty, action

(adjective)

Nominative, neuter, singular of kartavya

kartavya - to be done, fit to be done, duty, action, what ought to be done

Gerundive

Gerundive of root √kṛ (to do, to make).

Root: kṛ (class 8)

किम् (kim) - what, which

(pronoun)

Nominative, neuter, singular of kim

kim - what, which, why

मया (mayā) - by me

(pronoun)

Instrumental, singular of aham

aham - I, ego (ahaṅkāra)

कष्टम् (kaṣṭam) - painful (action or consequence) (difficult, painful, suffering, trouble)

(adjective)

Nominative, neuter, singular of kaṣṭa

kaṣṭa - difficult, painful, troublesome, evil, suffering, trouble

परत्र (paratra) - in the next world, hereafter

(indeclinable)

इति (iti) - marks the end of a quotation or thought (thus, so)

(indeclinable)

अतिदारुणम् (atidāruṇam) - very terrible, extremely dreadful

(adjective)

Nominative, neuter, singular of atidāruṇa

atidāruṇa - very terrible, extremely dreadful, exceedingly violent

Compound type : avyayībhāva (ati+dāruṇa)

• ati – over, beyond, exceeding, too much
  indeclinable
• dāruṇa – terrible, dreadful, harsh, severe
  adjective (neuter)

अप्रतीकारयोग्यम् (apratīkārayogyam) - not suitable for remedy, irremediable, incurable

(adjective)

Nominative, neuter, singular of apratīkārayogya

apratīkārayogya - not suitable for remedy, irremediable, incurable

Compound type : nañ-tatpuruṣa (a+pratīkārayogya)

• a – not, non-, un-
  indeclinable
• pratīkārayogya – suitable for remedy
  adjective (neuter)

हि (hi) - indeed, surely, certainly

(indeclinable)

वर्धते (vardhate) - increases, grows, thrives

(verb)

3rd person , singular, middle, present (lat) of √vṛdh

Root class 1, Atmanepada.

Root: vṛdh (class 1)

वार्धके (vārdhake) - in old age

(noun)

Locative, neuter, singular of vārdhaka

vārdhaka - old age, senility

भयम् (bhayam) - fear, dread

(noun)

Nominative, neuter, singular of bhaya

bhaya - fear, dread, apprehension, danger