महाभारतः mahābhārataḥ - book-1, chapter-93, verse-19

अस्याः क्षीरं पिबेन्मर्त्यः स्वादु यो वै सुमध्यमे ।
दश वर्षसहस्राणि स जीवेत्स्थिरयौवनः ॥१९॥

19. asyāḥ kṣīraṁ pibenmartyaḥ svādu yo vai sumadhyame ,
daśa varṣasahasrāṇi sa jīvetsthirayauvanaḥ.

19. asyāḥ kṣīram pibet martyaḥ svādu yaḥ vai sumadhyame
daśa varṣasahasrāṇi saḥ jīvet sthirayauvanaḥ

19. O beautiful-waisted one, indeed, any mortal who drinks this sweet milk will live for ten thousand years, remaining eternally youthful.

Words meanings summery:

• अस्याः (asyāḥ) - of this (cow, implied from context) (of this, her)

• क्षीरम् (kṣīram) - milk

• पिबेत् (pibet) - should drink

• मर्त्यः (martyaḥ) - mortal, human being

• स्वादु (svādu) - sweet, delicious

• यः (yaḥ) - who, which

• वै (vai) - indeed, certainly

• सुमध्यमे (sumadhyame) - Addressed to the queen, Sumadhyamā (O beautiful-waisted one, O slender-waisted one)

• दश (daśa) - ten

• वर्षसहस्राणि (varṣasahasrāṇi) - thousands of years

• सः (saḥ) - he, that

• जीवेत् (jīvet) - should live

• स्थिरयौवनः (sthirayauvanaḥ) - with lasting youth, eternally young

Words meanings and morphology

अस्याः (asyāḥ) - of this (cow, implied from context) (of this, her)

(pronoun)

Genitive, feminine, singular of idam

idam - this, it

क्षीरम् (kṣīram) - milk

(noun)

Accusative, neuter, singular of kṣīra

kṣīra - milk, water

पिबेत् (pibet) - should drink

(verb)

3rd person , singular, active, optative (vidhiliṅ) of pā

3rd person singular optative active of root pā (1st class)

Root: pā (class 1)

मर्त्यः (martyaḥ) - mortal, human being

(noun)

Nominative, masculine, singular of martya

martya - mortal, human

Root: mṛ

स्वादु (svādu) - sweet, delicious

(adjective)

Accusative, neuter, singular of svādu

svādu - sweet, delicious, pleasant

Note: Agrees with 'kṣīram'.

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

वै (vai) - indeed, certainly

(indeclinable)

सुमध्यमे (sumadhyame) - Addressed to the queen, Sumadhyamā (O beautiful-waisted one, O slender-waisted one)

(noun)

Vocative, feminine, singular of sumadhyamā

sumadhyamā - beautiful-waisted woman, slender-waisted

feminine form of sumadhyama

Compound type : karmadhāraya (su+madhyamā)

• su – good, well, beautiful
  adjective (masculine, feminine, neuter)
• madhyamā – middle, waist
  noun (feminine)
  feminine form of madhyama

दश (daśa) - ten

(indeclinable)

Note: Adjectival to 'varṣasahasrāṇi'.

वर्षसहस्राणि (varṣasahasrāṇi) - thousands of years

(noun)

Accusative, neuter, plural of varṣasahasra

varṣasahasra - thousand years

Compound type : tatpurusha (varṣa+sahasra)

• varṣa – year, rain
  noun (neuter)
  Root: vṛṣ
• sahasra – thousand
  noun (neuter)

Note: Accusative of duration.

सः (saḥ) - he, that

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Corresponds to the relative pronoun 'yaḥ'.

जीवेत् (jīvet) - should live

(verb)

3rd person , singular, active, optative (vidhiliṅ) of jīv

3rd person singular optative active of root jīv (1st class)

Root: jīv (class 1)

स्थिरयौवनः (sthirayauvanaḥ) - with lasting youth, eternally young

(adjective)

Nominative, masculine, singular of sthirayauvana

sthirayauvana - having lasting youth, perpetually young

Compound type : bahuvrīhi (sthira+yauvana)

• sthira – stable, firm, lasting
  adjective (masculine, feminine, neuter)
  Root: sthā
• yauvana – youth, adolescence
  noun (neuter)

Note: Agrees with 'saḥ'.