महाभारतः mahābhārataḥ - book-1, chapter-79, verse-16

पूर्णे वर्षसहस्रे तु प्रतिदास्यामि यौवनम् ।
स्वं चादास्यामि भूयोऽहं पाप्मानं जरया सह ॥१६॥

16. pūrṇe varṣasahasre tu pratidāsyāmi yauvanam ,
svaṁ cādāsyāmi bhūyo'haṁ pāpmānaṁ jarayā saha.

16. pūrṇe varṣasahasre tu pratidāsyāmi yauvanam svam
ca ādāsyāmi bhūyaḥ aham pāpmānam jarayā saha

16. When a thousand years are complete, I will return your youth, and I will take back my own (old age) along with its affliction.

Words meanings summery:

• पूर्णे (pūrṇe) - when complete (complete, full)

• वर्षसहस्रे (varṣasahasre) - in a thousand years

• तु (tu) - but, indeed, however

• प्रतिदास्यामि (pratidāsyāmi) - I will return

• यौवनम् (yauvanam) - youth

• स्वम् (svam) - my own (old age) (own)

• च (ca) - and

• आदास्यामि (ādāsyāmi) - I will take back, I will resume

• भूयः (bhūyaḥ) - again, further

• अहम् (aham) - I

• पाप्मानम् (pāpmānam) - affliction (associated with old age) (sin, evil, affliction, burden)

• जरया (jarayā) - by old age, with old age

• सह (saha) - with, along with

Words meanings and morphology

पूर्णे (pūrṇe) - when complete (complete, full)

(adjective)

Locative, neuter, singular of pūrṇa

pūrṇa - full, complete, finished

Past Passive Participle

root pṝ + kta

Root: pṝ (class 9)

Note: Modifies 'varṣasahasre'.

वर्षसहस्रे (varṣasahasre) - in a thousand years

(noun)

Locative, neuter, singular of varṣasahasra

varṣasahasra - a thousand years

Compound type : tatpuruṣa (varṣa+sahasra)

• varṣa – year, rain
  noun (masculine/neuter)
• sahasra – thousand
  noun (neuter)

तु (tu) - but, indeed, however

(indeclinable)

प्रतिदास्यामि (pratidāsyāmi) - I will return

(verb)

1st person , singular, active, future (lṛṭ) of prati-dā

root + upasarga

root dā (class 3) preceded by upasarga prati

Prefix: prati

Root: dā (class 3)

यौवनम् (yauvanam) - youth

(noun)

Accusative, neuter, singular of yauvana

yauvana - youth, youthfulness

स्वम् (svam) - my own (old age) (own)

(adjective)

Accusative, neuter, singular of sva

sva - own, one's own

Note: Refers to Yayati's own old age, which he will take back.

च (ca) - and

(indeclinable)

आदास्यामि (ādāsyāmi) - I will take back, I will resume

(verb)

1st person , singular, active, future (lṛṭ) of ā-dā

root + upasarga

root dā (class 3) preceded by upasarga ā

Prefix: ā

Root: dā (class 3)

भूयः (bhūyaḥ) - again, further

(indeclinable)

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, me

पाप्मानम् (pāpmānam) - affliction (associated with old age) (sin, evil, affliction, burden)

(noun)

Accusative, masculine, singular of pāpman

pāpman - sin, evil, misfortune, affliction, burden

जरया (jarayā) - by old age, with old age

(noun)

Instrumental, feminine, singular of jarā

jarā - old age, decrepitude

सह (saha) - with, along with

(indeclinable)