महाभारतः mahābhārataḥ - book-12, chapter-221, verse-42

पितृदेवातिथींश्चैव यथावत्तेऽभ्यपूजयन् ।
अवशेषाणि चाश्नन्ति नित्यं सत्यतपोरताः ॥४२॥

42. pitṛdevātithīṁścaiva yathāvatte'bhyapūjayan ,
avaśeṣāṇi cāśnanti nityaṁ satyataporatāḥ.

42. pitṛdevātithīn ca eva yathāvat te abhyapūjayan
avaśeṣāṇi ca āśnanti nityam satyataporatāḥ

42. te yathāvat pitṛdevātithīn ca eva abhyapūjayan
ca avaśeṣāṇi nityam āśnanti satyataporatāḥ

42. Moreover, they duly worshipped their ancestors, the gods, and their guests. They always partook of the remnants, being consistently devoted to truth and spiritual austerity (tapas).

Words meanings summery:

• पितृदेवातिथीन् (pitṛdevātithīn) - ancestors, gods, and guests (ancestors, gods, and guests (accusative plural))

• च (ca) - and (and, also)

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

• यथावत् (yathāvat) - duly (duly, properly, according to rule)

• ते (te) - they

• अभ्यपूजयन् (abhyapūjayan) - they worshipped

• अवशेषाणि (avaśeṣāṇi) - the remnants (of a meal or offering) (remnants, remains, leftovers)

• च (ca) - and (and, also)

• आश्नन्ति (āśnanti) - they partook (they eat, they partake)

• नित्यम् (nityam) - consistently (always, constantly)

• सत्यतपोरताः (satyataporatāḥ) - devoted to truth and spiritual austerity (tapas) (devoted to truth and austerity)

Words meanings and morphology

पितृदेवातिथीन् (pitṛdevātithīn) - ancestors, gods, and guests (ancestors, gods, and guests (accusative plural))

(noun)

Accusative, masculine, plural of pitṛdevātithi

pitṛdevātithi - ancestors, gods, and guests

Compound type : dvandva (pitṛ+deva+atithi)

• pitṛ – father, ancestor
  noun (masculine)
• deva – god, deity
  noun (masculine)
• atithi – guest, stranger
  noun (masculine)

च (ca) - and (and, also)

(indeclinable)

Note: Conjunction

एव (eva) - indeed, certainly (indeed, only, just)

(indeclinable)

Note: Emphatic particle.

यथावत् (yathāvat) - duly (duly, properly, according to rule)

(indeclinable)

From yathā (as) + suffix vat

Note: Adverb.

ते (te) - they

(pronoun)

Nominative, masculine, plural of tad

tad - that, he, she, it, they

अभ्यपूजयन् (abhyapūjayan) - they worshipped

(verb)

3rd person , plural, active, imperfect (laṅ) of pūj

imperfect tense, 3rd person plural, Parasmaipada

abhi + root pūj (10th class) -> abhipūjay -> abhyapūjayan

Prefix: abhi

Root: pūj (class 10)

अवशेषाणि (avaśeṣāṇi) - the remnants (of a meal or offering) (remnants, remains, leftovers)

(noun)

Accusative, neuter, plural of avaśeṣa

avaśeṣa - remainder, remnant, residue, leftover

From ava + root śiṣ (to remain)

Prefix: ava

Root: śiṣ (class 7)

च (ca) - and (and, also)

(indeclinable)

Note: Conjunction

आश्नन्ति (āśnanti) - they partook (they eat, they partake)

(verb)

3rd person , plural, active, present (laṭ) of aś

present tense, 3rd person plural, Parasmaipada

Root aś (9th class)

Root: aś (class 9)

नित्यम् (nityam) - consistently (always, constantly)

(indeclinable)

Note: Adverbial use.

सत्यतपोरताः (satyataporatāḥ) - devoted to truth and spiritual austerity (tapas) (devoted to truth and austerity)

(adjective)

Nominative, masculine, plural of satyataporata

satyataporata - devoted to truth and austerity

Compound type : dvandva (satya+tapas+rata)

• satya – truth, real, true
  noun (neuter)
• tapas – austerity, heat, spiritual fervor
  noun (neuter)
• rata – delighted, devoted, engaged in
  adjective (masculine)
  Past Passive Participle
  From root ram (to delight, rejoice)
  Root: ram (class 1)

Note: Adjective for the implied subject 'they'.