महाभारतः mahābhārataḥ - book-5, chapter-48, verse-8

नरनारायणावेतौ लोकाल्लोकं समास्थितौ ।
ऊर्जितौ स्वेन तपसा महासत्त्वपराक्रमौ ॥८॥

8. naranārāyaṇāvetau lokāllokaṁ samāsthitau ,
ūrjitau svena tapasā mahāsattvaparākramau.

8. naranārāyaṇau etau lokāt lokam samāsthitau
ūrjitau svena tapasā mahāsattvaparākramau

8. These two, Nara and Narayana, are situated throughout the worlds (loka), mighty through their own asceticism (tapas), and possessing great inherent nature (sattva) and prowess.

Words meanings summery:

• नरनारायणौ (naranārāyaṇau) - Nara and Narayana

• एतौ (etau) - these two

• लोकात् (lokāt) - from the world

• लोकम् (lokam) - to the world

• समास्थितौ (samāsthitau) - situated throughout the worlds (established, situated, residing)

• ऊर्जितौ (ūrjitau) - mighty, powerful, energetic

• स्वेन (svena) - by their own, by one's own

• तपसा (tapasā) - by penance, by asceticism (tapas)

• महासत्त्वपराक्रमौ (mahāsattvaparākramau) - possessing great essence/being and valor/prowess

Words meanings and morphology

नरनारायणौ (naranārāyaṇau) - Nara and Narayana

(proper noun)

Nominative, masculine, dual of naranārāyaṇa

naranārāyaṇa - Nara and Narayana (a divine pair of sages)

Compound type : dvandva (nara+nārāyaṇa)

• nara – man, human, primeval man, divine being
  noun (masculine)
• nārāyaṇa – Narayana (a name of Vishnu)
  proper noun (masculine)

एतौ (etau) - these two

(pronoun)

Nominative, masculine, dual of etad

etad - this (demonstrative pronoun)

लोकात् (lokāt) - from the world

(noun)

Ablative, masculine, singular of loka

loka - world, realm, people

Root: lok (class 10)

लोकम् (lokam) - to the world

(noun)

Accusative, masculine, singular of loka

loka - world, realm, people

Root: lok (class 10)

समास्थितौ (samāsthitau) - situated throughout the worlds (established, situated, residing)

(participle)

Nominative, masculine, dual of samāsthita

samāsthita - established, situated, residing

Past Passive Participle

derived from the root √sthā with upasargas sam and ā

Prefixes: sam+ā

Root: sthā (class 1)

ऊर्जितौ (ūrjitau) - mighty, powerful, energetic

(participle)

Nominative, masculine, dual of ūrjita

ūrjita - strong, mighty, energetic, exalted

Past Passive Participle

derived from the root √ūrj

Root: ūrj (class 10)

स्वेन (svena) - by their own, by one's own

(pronoun)

Instrumental, masculine, singular of sva

sva - one's own, self

तपसा (tapasā) - by penance, by asceticism (tapas)

(noun)

Instrumental, neuter, singular of tapas

tapas - penance, asceticism, spiritual heat, austerity

Root: tap (class 1)

महासत्त्वपराक्रमौ (mahāsattvaparākramau) - possessing great essence/being and valor/prowess

(adjective)

Nominative, masculine, dual of mahāsattvaparākrama

mahāsattvaparākrama - possessing great essence and valor, of great spiritual strength and prowess

Compound type : bahuvrīhi (mahā+sattva+parākrama)

• mahā – great, large
  adjective
• sattva – being, essence, inherent nature, goodness
  noun (neuter)
  Root: as (class 2)
• parākrama – valor, prowess, heroism, power
  noun (masculine)
  derived from the root √kram with upasarga parā
  Prefix: parā
  Root: kram (class 1)