महाभारतः mahābhārataḥ - book-3, chapter-80, verse-57

यस्तु वर्षशतं पूर्णमग्निहोत्रमुपासते ।
कार्त्तिकीं वा वसेदेकां पुष्करे सममेव तत् ॥५७॥

57. yastu varṣaśataṁ pūrṇamagnihotramupāsate ,
kārttikīṁ vā vasedekāṁ puṣkare samameva tat.

57. yaḥ tu varṣaśatam pūrṇam agnihotram upāsate
kārttikīm vā vaset ekām puṣkare samam eva tat

57. Whoever fully performs the `agnihotra` ritual for a hundred years, or resides for a single Kārttikī month in Puṣkara, that (latter act) is considered equivalent.

Words meanings summery:

• यः (yaḥ) - who, whoever

• तु (tu) - but, indeed, however

• वर्षशतम् (varṣaśatam) - a hundred years, a century

• पूर्णम् (pūrṇam) - full, complete

• अग्निहोत्रम् (agnihotram) - the `agnihotra` ritual

• उपासते (upāsate) - performs, attends to, worships

• कार्त्तिकीम् (kārttikīm) - the Kārttikī (month or full moon day)

• वा (vā) - or

• वसेत् (vaset) - should dwell, should reside

• एकाम् (ekām) - one, a single

• पुष्करे (puṣkare) - in Puṣkara (a holy place)

• समम् (samam) - equal, equivalent

• एव (eva) - indeed, only, just

• तत् (tat) - that

Words meanings and morphology

यः (yaḥ) - who, whoever

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

तु (tu) - but, indeed, however

(indeclinable)

वर्षशतम् (varṣaśatam) - a hundred years, a century

(noun)

Accusative, neuter, singular of varṣaśata

varṣaśata - a hundred years, a century

Compound type : tatpuruṣa (varṣa+śata)

• varṣa – year, rain
  noun (neuter)
• śata – hundred
  noun (neuter)

पूर्णम् (pūrṇam) - full, complete

(adjective)

Accusative, neuter, singular of pūrṇa

pūrṇa - full, complete, fulfilled

Past Passive Participle

from root pṛ (to fill)

Root: pṛ (class 3)

Note: Qualifies varṣaśatam.

अग्निहोत्रम् (agnihotram) - the `agnihotra` ritual

(noun)

Accusative, neuter, singular of agnihotra

agnihotra - the Agnihotra ritual (daily fire sacrifice)

Compound type : tatpuruṣa (agni+hotra)

• agni – fire
  noun (masculine)
• hotra – oblation, sacrifice
  noun (neuter)

Note: Object of upāsate.

उपासते (upāsate) - performs, attends to, worships

(verb)

3rd person , singular, middle, present (laṭ) of upa-ās

Prefix: upa

Root: ās (class 2)

कार्त्तिकीम् (kārttikīm) - the Kārttikī (month or full moon day)

(noun)

Accusative, feminine, singular of kārttikī

kārttikī - related to Kārttika (a month name), the full moon day of Kārttika, the month of Kārttika

Note: Refers to the Kārttika month or its full moon day, here likely implying the duration.

वा (vā) - or

(indeclinable)

वसेत् (vaset) - should dwell, should reside

(verb)

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

Root: vas (class 1)

एकाम् (ekām) - one, a single

(adjective)

Accusative, feminine, singular of eka

eka - one, unique, single

Note: Qualifies kārttikīm.

पुष्करे (puṣkare) - in Puṣkara (a holy place)

(proper noun)

Locative, neuter, singular of puṣkara

puṣkara - Puṣkara (a sacred lake and pilgrimage site), lotus, blue lotus

Note: Location for vaset.

समम् (samam) - equal, equivalent

(adjective)

Nominative, neuter, singular of sama

sama - equal, same, uniform, level

Note: Adverbial or predicate adjective.

एव (eva) - indeed, only, just

(indeclinable)

Note: Emphatic.

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, this

Note: Refers to the act of residing in Puṣkara.