महाभारतः mahābhārataḥ - book-3, chapter-187, verse-51

अस्यैव वरदानाद्धि स्मृतिर्न प्रजहाति माम् ।
दीर्घमायुश्च कौन्तेय स्वच्छन्दमरणं तथा ॥५१॥

51. asyaiva varadānāddhi smṛtirna prajahāti mām ,
dīrghamāyuśca kaunteya svacchandamaraṇaṁ tathā.

51. asya eva varadānāt hi smṛtiḥ na prajahāti mām |
dīrgham āyuḥ ca kaunteya svacchandamaraṇam tathā

51. Indeed, due to his (Janārdana's) boon alone, my memory (smṛti) does not abandon me, and similarly, O son of Kuntī, I have a long life and the power of death at will.

Words meanings summery:

• अस्य (asya) - of him (Janārdana) (of this, of him)

• एव (eva) - alone, only, indeed, just

• वरदानात् (varadānāt) - from the granting of a boon, by a boon

• हि (hi) - indeed, because, for

• स्मृतिः (smṛtiḥ) - my memory (memory, recollection)

• न (na) - not, no

• प्रजहाति (prajahāti) - abandons, forsakes, leaves

• माम् (mām) - me

• दीर्घम् (dīrgham) - long

• आयुः (āyuḥ) - life, lifespan

• च (ca) - and

• कौन्तेय (kaunteya) - O son of Kuntī (addressed to Yudhiṣṭhira) (O son of Kuntī)

• स्वच्छन्दमरणम् (svacchandamaraṇam) - death at will, optional death

• तथा (tathā) - similarly, also, thus

Words meanings and morphology

अस्य (asya) - of him (Janārdana) (of this, of him)

(pronoun)

Genitive, masculine, singular of idam

idam - this, he, she, it

एव (eva) - alone, only, indeed, just

(indeclinable)

Emphatic particle

वरदानात् (varadānāt) - from the granting of a boon, by a boon

(noun)

Ablative, neuter, singular of varadāna

varadāna - granting of a boon, bestowing of a wish

Compound type : tatpuruṣa (vara+dāna)

• vara – boon, blessing, wish
  noun (masculine)
  From root vṛ (to choose)
• dāna – giving, granting, gift
  noun (neuter)
  From root dā (to give)

Note: Expresses cause or reason.

हि (hi) - indeed, because, for

(indeclinable)

Emphatic or causal particle

स्मृतिः (smṛtiḥ) - my memory (memory, recollection)

(noun)

Nominative, feminine, singular of smṛti

smṛti - memory, recollection, tradition

From root smṛ (to remember)

Root: smṛ (class 1)

Note: Subject of `prajahāti`.

न (na) - not, no

(indeclinable)

Negative particle

प्रजहाति (prajahāti) - abandons, forsakes, leaves

(verb)

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

Present tense

From pra + root hā (to abandon)

Prefix: pra

Root: hā (class 3)

माम् (mām) - me

(pronoun)

Accusative, singular of aham

aham - I, myself

Note: Object of `prajahāti`.

दीर्घम् (dīrgham) - long

(adjective)

Accusative, neuter, singular of dīrgha

dīrgha - long, extended

Note: Agrees with `āyuḥ`.

आयुः (āyuḥ) - life, lifespan

(noun)

Accusative, neuter, singular of āyus

āyus - life, vital power, lifespan

s-stem noun

Note: Implied as an object of 'receiving' due to the boon.

च (ca) - and

(indeclinable)

कौन्तेय (kaunteya) - O son of Kuntī (addressed to Yudhiṣṭhira) (O son of Kuntī)

(proper noun)

Vocative, masculine, singular of kaunteya

kaunteya - son of Kuntī (mother of Yudhiṣṭhira, Bhīma, Arjuna)

Vrddhi derivative of Kuntī (Kunti + ṣyaN)

Note: Addressing Yudhiṣṭhira.

स्वच्छन्दमरणम् (svacchandamaraṇam) - death at will, optional death

(noun)

Accusative, neuter, singular of svacchandamaraṇa

svacchandamaraṇa - death at one's own will, optional death

Compound type : tatpuruṣa (svacchanda+maraṇa)

• svacchanda – one's own will, free will, independent
  adjective
  From sva (own) + chanda (will, desire)
• maraṇa – death, dying
  noun (neuter)
  From root mṛ (to die) + ana suffix
  Root: mṛ (class 1)

Note: Implied as an object of 'receiving' due to the boon.

तथा (tathā) - similarly, also, thus

(indeclinable)