महाभारतः mahābhārataḥ - book-9, chapter-45, verse-90

ऐश्वर्याणि च तत्रस्थो ददावीशः पृथक्पृथक् ।
तदा नैरृतमुख्येभ्यस्त्रैलोक्ये पावकात्मजः ॥९०॥

90. aiśvaryāṇi ca tatrastho dadāvīśaḥ pṛthakpṛthak ,
tadā nairṛtamukhyebhyastrailokye pāvakātmajaḥ.

90. aiśvaryāṇi ca tatrasthaḥ dadau īśaḥ pṛthak pṛthak
| tadā nairṛtamukhyebhyaḥ trailokye pāvakātmajaḥ

90. ca tatrasthaḥ īśaḥ pāvakātmajaḥ tadā trailokye
nairṛtamukhyebhyaḥ pṛthak pṛthak aiśvaryāṇi dadau

90. Being present at that sacred site (tīrtha), the lord, Kārttikeya (pāvakātmaja), then bestowed various sovereignties (aiśvarya) individually upon the chiefs of the Nairṛtas (a class of Rākṣasas) throughout the three worlds.

Words meanings summery:

• ऐश्वर्याणि (aiśvaryāṇi) - sovereignties, powers, riches

• च (ca) - and

• तत्रस्थः (tatrasthaḥ) - being there, situated there

• ददौ (dadau) - gave

• ईशः (īśaḥ) - lord, ruler

• पृथक् (pṛthak) - separately, individually

• पृथक् (pṛthak) - separately, individually

• तदा (tadā) - then, at that time

• नैरृतमुख्येभ्यः (nairṛtamukhyebhyaḥ) - to the chiefs of the Nairṛtas (a class of Rākṣasas)

• त्रैलोक्ये (trailokye) - in the three worlds

• पावकात्मजः (pāvakātmajaḥ) - the son of fire (Kārttikeya)

Words meanings and morphology

ऐश्वर्याणि (aiśvaryāṇi) - sovereignties, powers, riches

(noun)

Nominative, neuter, plural of aiśvarya

aiśvarya - sovereignty, dominion, power, wealth, prosperity

Derived from 'īśvara' (lord) or 'īśa' (lord) with suffix -ya.

Root: īś

च (ca) - and

(indeclinable)

तत्रस्थः (tatrasthaḥ) - being there, situated there

(adjective)

Nominative, masculine, singular of tatrastha

tatrastha - standing there, situated there, being there

Compound type : tatpuruṣa (tatra+stha)

• tatra – there, in that place, in that case
  indeclinable
• stha – standing, staying, situated in, existing
  adjective
  Agent Noun suffix
  Derived from the root 'sthā' meaning 'to stand'.
  Root: sthā (class 1)

ददौ (dadau) - gave

(verb)

3rd person , singular, active, perfect (liṭ) of dā

Root: dā (class 3)

ईशः (īśaḥ) - lord, ruler

(noun)

Nominative, masculine, singular of īśa

īśa - lord, master, ruler, Shiva

Root: īś (class 2)

पृथक् (pṛthak) - separately, individually

(indeclinable)

पृथक् (pṛthak) - separately, individually

(indeclinable)

तदा (tadā) - then, at that time

(indeclinable)

नैरृतमुख्येभ्यः (nairṛtamukhyebhyaḥ) - to the chiefs of the Nairṛtas (a class of Rākṣasas)

(noun)

Dative, masculine, plural of nairṛtamukhya

nairṛtamukhya - chief of the Nairṛtas

Compound type : tatpuruṣa (nairṛta+mukhya)

• nairṛta – pertaining to Nirṛti (goddess of calamity); a Rākṣasa (demon), especially those inhabiting the south-west direction
  noun (masculine)
  Derived from Nirṛti (name of a goddess) with a patronymic suffix.
• mukhya – chief, principal, foremost, prominent
  adjective (masculine)

त्रैलोक्ये (trailokye) - in the three worlds

(noun)

Locative, neuter, singular of trailokya

trailokya - the three worlds (heaven, earth, and the lower regions)

पावकात्मजः (pāvakātmajaḥ) - the son of fire (Kārttikeya)

(noun)

Nominative, masculine, singular of pāvakātmaja

pāvakātmaja - son of fire, Kārttikeya

Compound type : tatpuruṣa (pāvaka+ātmaja)

• pāvaka – fire, purifier; one who purifies
  noun (masculine)
  Derived from root 'pū' (to purify).
  Root: pū (class 1)
• ātmaja – self-born, son
  noun (masculine)
  Compound 'ātman-ja' meaning 'born from self'.