महाभारतः mahābhārataḥ - book-1, chapter-54, verse-12

तत्रोपविष्टं वरदं देवर्षिगणपूजितम् ।
पूजयामास राजेन्द्रः शास्त्रदृष्टेन कर्मणा ॥१२॥

12. tatropaviṣṭaṁ varadaṁ devarṣigaṇapūjitam ,
pūjayāmāsa rājendraḥ śāstradṛṣṭena karmaṇā.

12. tatra upaviṣṭam varadam devarṣigaṇa-pūjitam
pūjayāmāsa rājendraḥ śāstradṛṣṭena karmaṇā

12. There, the king of kings (Janamejaya) worshipped the sage, who was seated, the bestower of boons, and revered by groups of divine sages, with rites performed according to scriptural injunctions.

Words meanings summery:

• तत्र (tatra) - there (on the prepared seat) (there, in that place)

• उपविष्टम् (upaviṣṭam) - who was seated (seated, sitting down)

• वरदम् (varadam) - the bestower of boons (an attribute of Vyasa) (bestowing boons, bestower of boons)

• देवर्षिगण-पूजितम् (devarṣigaṇa-pūjitam) - revered by hosts of divine sages (worshipped by groups of divine sages)

• पूजयामास (pūjayāmāsa) - Janamejaya worshipped (the sage) (he worshipped, he honored)

• राजेन्द्रः (rājendraḥ) - Janamejaya, the great king (king of kings, paramount ruler)

• शास्त्रदृष्टेन (śāstradṛṣṭena) - by ritual acts guided by scriptures (according to the scriptures, as prescribed by sacred texts)

• कर्मणा (karmaṇā) - through proper rituals (by action, by deed, by rite)

Words meanings and morphology

तत्र (tatra) - there (on the prepared seat) (there, in that place)

(indeclinable)

उपविष्टम् (upaviṣṭam) - who was seated (seated, sitting down)

(adjective)

Accusative, masculine, singular of upaviṣṭa

upaviṣṭa - seated, sitting down

past participle

Derived from root viś with prefix upa

Prefix: upa

Root: viś (class 6)

Note: Refers to the sage (ṛṣim), in accusative case.

वरदम् (varadam) - the bestower of boons (an attribute of Vyasa) (bestowing boons, bestower of boons)

(adjective)

Accusative, masculine, singular of varada

varada - granting wishes, bestowing boons; a bestower of boons

agent noun

Derived from vara (boon) and da (giver, from root dā)

Compound type : upapada-tatpuruṣa (vara+da)

• vara – boon, blessing, wish, choice
  noun (masculine)
• da – giving, bestowing, giver
  adjective (masculine)
  agent noun
  Derived from root dā (to give)
  Root: dā (class 3)

Note: Refers to the sage (ṛṣim).

देवर्षिगण-पूजितम् (devarṣigaṇa-pūjitam) - revered by hosts of divine sages (worshipped by groups of divine sages)

(adjective)

Accusative, masculine, singular of devarṣigaṇa-pūjita

devarṣigaṇa-pūjita - worshipped by groups of divine sages

past participle (compound)

Compound type : tṛtīyā-tatpuruṣa (devarṣigaṇa+pūjita)

• devarṣigaṇa – group/host of divine sages
  noun (masculine)
• pūjita – worshipped, honored, revered
  adjective (masculine)
  past participle
  Derived from root pūj (to worship)
  Root: pūj (class 10)

Note: Refers to the sage (ṛṣim).

पूजयामास (pūjayāmāsa) - Janamejaya worshipped (the sage) (he worshipped, he honored)

(verb)

3rd person , singular, active, past perfect (lit) of pūj

Periphrastic perfect tense, from root pūj

Root: pūj (class 10)

Note: The 'āmāsa' part is part of the periphrastic perfect conjugation.

राजेन्द्रः (rājendraḥ) - Janamejaya, the great king (king of kings, paramount ruler)

(noun)

Nominative, masculine, singular of rājendra

rājendra - king of kings, paramount ruler

Compound type : ṣaṣṭhī-tatpuruṣa (rājan+indra)

• rājan – king, monarch
  noun (masculine)
• indra – Indra; best, excellent (as suffix)
  noun (masculine)

Note: Refers to Janamejaya.

शास्त्रदृष्टेन (śāstradṛṣṭena) - by ritual acts guided by scriptures (according to the scriptures, as prescribed by sacred texts)

(adjective)

Instrumental, neuter, singular of śāstradṛṣṭa

śāstradṛṣṭa - seen/prescribed in scriptures, according to the śāstras

Compound type : tṛtīyā-tatpuruṣa (śāstra+dṛṣṭa)

• śāstra – scripture, sacred text, treatise
  noun (neuter)
• dṛṣṭa – seen, perceived, prescribed
  adjective (neuter)
  past participle
  Derived from root dṛś (to see)
  Root: dṛś (class 1)

Note: Modifies 'karmaṇā'.

कर्मणा (karmaṇā) - through proper rituals (by action, by deed, by rite)

(noun)

Instrumental, neuter, singular of karman

karman - action, deed, ritual, work

action noun

Derived from root kṛ (to do)

Root: kṛ (class 8)