महाभारतः mahābhārataḥ - book-13, chapter-67, verse-26

तथा प्रशंसते दीपान्यमः पितृहितेप्सया ।
तस्माद्दीपप्रदो नित्यं संतारयति वै पितॄन् ॥२६॥

26. tathā praśaṁsate dīpānyamaḥ pitṛhitepsayā ,
tasmāddīpaprado nityaṁ saṁtārayati vai pitṝn.

26. tathā praśaṃsate dīpān yamaḥ pitṛhita-īpsayā |
tasmāt dīpa-pradaḥ nityam saṃtārayati vai pitṝn

26. tathā yamaḥ pitṛhita-īpsayā dīpān praśaṃsate
tasmāt dīpa-pradaḥ nityam vai pitṝn saṃtārayati

26. Thus, Yama praises lamps out of a desire for the welfare of the ancestors. Therefore, one who always offers lamps (dāna) undoubtedly causes his ancestors to cross over (from suffering).

Words meanings summery:

• तथा (tathā) - thus, in that manner, so

• प्रशंसते (praśaṁsate) - he praises, he commends

• दीपान् (dīpān) - lamps

• यमः (yamaḥ) - Yama, the deity of death and justice (Yama (the god of death and justice))

• पितृहित-ईप्सया (pitṛhita-īpsayā) - by the desire for the welfare of ancestors

• तस्मात् (tasmāt) - therefore, from that

• दीप-प्रदः (dīpa-pradaḥ) - one who offers lamps (dāna) (giver of lamps, lamp-giver)

• नित्यम् (nityam) - always, constantly, eternally

• संतारयति (saṁtārayati) - causes to cross over (from suffering/saṃsāra) (he causes to cross over, he delivers, he saves)

• वै (vai) - undoubtedly (indeed, verily, surely (an emphatic particle))

• पितॄन् (pitṝn) - ancestors, fathers

Words meanings and morphology

तथा (tathā) - thus, in that manner, so

(indeclinable)

प्रशंसते (praśaṁsate) - he praises, he commends

(verb)

3rd person , singular, middle, present (lat) of pra-śaṃs

Prefix: pra

Root: śaṃs (class 1)

दीपान् (dīpān) - lamps

(noun)

Accusative, masculine, plural of dīpa

dīpa - lamp, light, source of light

Derived from root √dīp (to shine, to glow).

Root: dīp (class 4)

यमः (yamaḥ) - Yama, the deity of death and justice (Yama (the god of death and justice))

(proper noun)

Nominative, masculine, singular of yama

yama - Yama (god of death), restraint, control

Root: yam (class 1)

पितृहित-ईप्सया (pitṛhita-īpsayā) - by the desire for the welfare of ancestors

(noun)

Instrumental, feminine, singular of pitṛhita-īpsā

pitṛhita-īpsā - desire for the welfare of ancestors

Compound type : tatpurusha (pitṛhita+īpsā)

• pitṛhita – welfare of ancestors, beneficial to ancestors
  noun (neuter)
  Compound of pitṛ (ancestor) and hita (welfare, beneficial).
• īpsā – desire, wish
  noun (feminine)
  Desiderative noun from √āp (to obtain) with prefix i-.
  Root: āp (class 5)

तस्मात् (tasmāt) - therefore, from that

(indeclinable)

Ablative of tad used adverbially.

दीप-प्रदः (dīpa-pradaḥ) - one who offers lamps (dāna) (giver of lamps, lamp-giver)

(noun)

Nominative, masculine, singular of dīpa-prada

dīpa-prada - giver of lamps, lamp-giver

Compound type : tatpurusha (dīpa+prada)

• dīpa – lamp, light
  noun (masculine)
  Root: dīp (class 4)
• prada – giving, bestowing, giver
  adjective (masculine)
  agent noun/kṛt suffix
  Derived from pra-√dā (to give, bestow).
  Prefix: pra
  Root: dā (class 3)

नित्यम् (nityam) - always, constantly, eternally

(indeclinable)

Note: Used adverbially here.

संतारयति (saṁtārayati) - causes to cross over (from suffering/saṃsāra) (he causes to cross over, he delivers, he saves)

(verb)

3rd person , singular, active, present (lat) of saṃ-tṛ

causative

Causative form of √tṛ (to cross, to pass over) with prefix saṃ-.

Prefix: sam

Root: tṛ (class 1)

वै (vai) - undoubtedly (indeed, verily, surely (an emphatic particle))

(indeclinable)

पितॄन् (pitṝn) - ancestors, fathers

(noun)

Accusative, masculine, plural of pitṛ

pitṛ - father, ancestor