महाभारतः mahābhārataḥ - book-12, chapter-185, verse-20

इह प्रजापतिः पूर्वं देवाः सर्षिगणास्तथा ।
इष्ट्वेष्टतपसः पूता ब्रह्मलोकमुपाश्रिताः ॥२०॥

20. iha prajāpatiḥ pūrvaṁ devāḥ sarṣigaṇāstathā ,
iṣṭveṣṭatapasaḥ pūtā brahmalokamupāśritāḥ.

20. iha prajā-patiḥ pūrvam devāḥ sa-ṛṣi-gaṇāḥ tathā
iṣṭvā iṣṭa-tapasaḥ pūtāḥ brahma-lokam upāśritāḥ

20. iha pūrvam prajā-patiḥ devāḥ sa-ṛṣi-gaṇāḥ tathā
iṣṭvā iṣṭa-tapasaḥ pūtāḥ brahma-lokam upāśritāḥ

20. Here, formerly, Prajapati, the gods, and groups of sages, having performed Vedic rituals (yajña) and (through that) become purified by their desired austerities (tapas), attained the world of Brahman (brahmaloka).

Words meanings summery:

• इह (iha) - here, in this world

• प्रजा-पतिः (prajā-patiḥ) - Prajapati (a creator deity), lord of creatures

• पूर्वम् (pūrvam) - formerly, before, in the past

• देवाः (devāḥ) - gods, deities

• स-ऋषि-गणाः (sa-ṛṣi-gaṇāḥ) - along with groups of sages, accompanied by hosts of seers

• तथा (tathā) - and also (thus, so, also, and, similarly)

• इष्ट्वा (iṣṭvā) - having performed sacrifices (yajña) (having worshipped, having sacrificed, having desired)

• इष्ट-तपसः (iṣṭa-tapasaḥ) - those who have performed desired austerities (tapas) (whose desired austerities are performed, purified by austerities)

• पूताः (pūtāḥ) - purified, cleansed, sacred

• ब्रह्म-लोकम् (brahma-lokam) - the world of Brahman

• उपाश्रिताः (upāśritāḥ) - resorted to, attained, taken refuge in

Words meanings and morphology

इह (iha) - here, in this world

(indeclinable)

प्रजा-पतिः (prajā-patiḥ) - Prajapati (a creator deity), lord of creatures

(proper noun)

Nominative, masculine, singular of prajā-pati

prajā-pati - lord of creatures, creator, Prajapati (name of a deity)

Compound type : tatpuruṣa (prajā+pati)

• prajā – progeny, offspring, creatures, subjects, people
  noun (feminine)
• pati – master, lord, husband, owner
  noun (masculine)

पूर्वम् (pūrvam) - formerly, before, in the past

(indeclinable)

Note: Used as an adverb here.

देवाः (devāḥ) - gods, deities

(noun)

Nominative, masculine, plural of deva

deva - god, deity, divine being

Root: div (class 4)

स-ऋषि-गणाः (sa-ṛṣi-gaṇāḥ) - along with groups of sages, accompanied by hosts of seers

(adjective)

Nominative, masculine, plural of sa-ṛṣi-gaṇa

sa-ṛṣi-gaṇa - accompanied by groups of sages

Compound type : bahuvrīhi (sa+ṛṣi+gaṇa)

• sa – with, together with, accompanied by
  indeclinable
• ṛṣi – sage, seer, inspired poet
  noun (masculine)
• gaṇa – group, multitude, host, troop
  noun (masculine)

तथा (tathā) - and also (thus, so, also, and, similarly)

(indeclinable)

इष्ट्वा (iṣṭvā) - having performed sacrifices (yajña) (having worshipped, having sacrificed, having desired)

(indeclinable)

absolutive

Derived from root 'yaj' (to sacrifice, worship) with suffix '-tvā'.

Root: yaj (class 1)

इष्ट-तपसः (iṣṭa-tapasaḥ) - those who have performed desired austerities (tapas) (whose desired austerities are performed, purified by austerities)

(adjective)

Nominative, masculine, plural of iṣṭa-tapas

iṣṭa-tapas - one whose penance is performed/desired, one who has performed penance

Compound type : bahuvrīhi (iṣṭa+tapas)

• iṣṭa – desired, worshipped, sacrificed, beloved
  adjective (masculine)
  Past Passive Participle
  Past Passive Participle of root 'yaj' (to sacrifice, worship).
  Root: yaj (class 1)
• tapas – austerity, penance, heat, spiritual fervor
  noun (neuter)
  Root: tap (class 1)

Note: Adjectival compound referring to Prajapati, gods, and sages.

पूताः (pūtāḥ) - purified, cleansed, sacred

(adjective)

Nominative, masculine, plural of pūta

pūta - purified, cleansed, pure, holy

Past Passive Participle

Past Passive Participle of root 'pū' (to purify).

Root: pū (class 1)

ब्रह्म-लोकम् (brahma-lokam) - the world of Brahman

(noun)

Accusative, masculine, singular of brahma-loka

brahma-loka - the world of Brahman, a heavenly realm

Compound type : tatpuruṣa (brahman+loka)

• brahman – Brahman (the Absolute), sacred utterance, universal spirit
  noun (neuter)
  Root: bṛh (class 1)
• loka – world, realm, space, people, community
  noun (masculine)
  Root: loc (class 10)

उपाश्रिताः (upāśritāḥ) - resorted to, attained, taken refuge in

(adjective)

Nominative, masculine, plural of upāśrita

upāśrita - resorted to, attained, taken refuge in, dependent on

Past Passive Participle

Past Passive Participle of root 'śrī' with prefix 'upa-ā'.

Prefixes: upa+ā

Root: śrī (class 1)