महाभारतः mahābhārataḥ - book-13, chapter-80, verse-42

अध्यापयेरञ्शिष्यान्वै गोमतीं यज्ञसंमिताम् ।
त्रिरात्रोपोषितः श्रुत्वा गोमतीं लभते वरम् ॥४२॥

42. adhyāpayerañśiṣyānvai gomatīṁ yajñasaṁmitām ,
trirātropoṣitaḥ śrutvā gomatīṁ labhate varam.

42. adhyāpayeran śiṣyān vai gomatīm yajñasaṃmitām
trirātropoṣitaḥ śrutvā gomatīm labhate varam

42. vai śiṣyān yajñasaṃmitām gomatīm adhyāpayeran
trirātropoṣitaḥ gomatīm śrutvā varam labhate

42. Indeed, one should teach the Gomatī scripture, which is considered equal to a Vedic ritual (yajña), to disciples. One who has fasted for three nights and then listened to the Gomatī obtains a boon.

Words meanings summery:

• अध्यापयेरन् (adhyāpayeran) - they should teach, one should teach

• शिष्यान् (śiṣyān) - disciples, pupils

• वै (vai) - indeed, certainly, surely

• गोमतीम् (gomatīm) - The Gomatī scripture or sacred text. (Gomatī (name of a river or a text))

• यज्ञसंमिताम् (yajñasaṁmitām) - comparable to a Vedic ritual, esteemed as a Vedic ritual

• त्रिरात्रोपोषितः (trirātropoṣitaḥ) - one who has fasted for three nights

• श्रुत्वा (śrutvā) - having heard, after hearing

• गोमतीम् (gomatīm) - The Gomatī scripture or sacred text. (Gomatī (name of a river or a text))

• लभते (labhate) - obtains, gains, receives

• वरम् (varam) - boon, blessing, best thing

Words meanings and morphology

अध्यापयेरन् (adhyāpayeran) - they should teach, one should teach

(verb)

3rd person , plural, active, optative (vidhiliṅ) of adhyāp

causative optative

root 'i' with prefix 'adhi' in causative form, optative 3rd plural parasmaipada ending

Prefix: adhi

Root: ī (class 2)

शिष्यान् (śiṣyān) - disciples, pupils

(noun)

Accusative, masculine, plural of śiṣya

śiṣya - pupil, disciple, student

Root: śās (class 2)

वै (vai) - indeed, certainly, surely

(indeclinable)

गोमतीम् (gomatīm) - The Gomatī scripture or sacred text. (Gomatī (name of a river or a text))

(proper noun)

Accusative, feminine, singular of gomatī

gomatī - having cows, rich in cows; name of a river; name of a sacred text or female deity

Feminine form of 'gomat'.

यज्ञसंमिताम् (yajñasaṁmitām) - comparable to a Vedic ritual, esteemed as a Vedic ritual

(adjective)

Accusative, feminine, singular of yajñasaṃmita

yajñasaṁmita - equal to a Vedic ritual, compared to a Vedic ritual

Compound type : tatpuruṣa (yajña+saṃmita)

• yajña – Vedic ritual, devotion, worship, offering
  noun (masculine)
  Root: yaj (class 1)
• saṃmita – measured, compared, equal to
  adjective (masculine)
  Past Passive Participle
  From root 'mā' with prefix 'sam'.
  Prefix: sam
  Root: mā (class 2)

Note: Qualifies 'gomatīm'.

त्रिरात्रोपोषितः (trirātropoṣitaḥ) - one who has fasted for three nights

(noun)

Nominative, masculine, singular of trirātropoṣita

trirātropoṣita - one who has fasted for three nights

Compound type : tatpuruṣa (trirātra+upoṣita)

• trirātra – three nights, a period of three nights
  noun (neuter)
• upoṣita – fasted, having fasted
  adjective (masculine)
  Past Passive Participle
  From root 'vas' with prefix 'upa'.
  Prefix: upa
  Root: vas (class 2)

श्रुत्वा (śrutvā) - having heard, after hearing

(indeclinable)

Absolutive

From root 'śru' with suffix -tvā.

Root: śru (class 5)

गोमतीम् (gomatīm) - The Gomatī scripture or sacred text. (Gomatī (name of a river or a text))

(proper noun)

Accusative, feminine, singular of gomatī

gomatī - having cows, rich in cows; name of a river; name of a sacred text or female deity

Feminine form of 'gomat'.

लभते (labhate) - obtains, gains, receives

(verb)

3rd person , singular, middle, present (laṭ) of labh

present indicative

Present 3rd singular middle voice.

Root: labh (class 1)

वरम् (varam) - boon, blessing, best thing

(noun)

Accusative, neuter, singular of vara

vara - boon, blessing, excellent, choice

Root: vṛ (class 5)