महाभारतः mahābhārataḥ - book-3, chapter-187, verse-4

अहं नारायणो नाम प्रभवः शाश्वतोऽव्ययः ।
विधाता सर्वभूतानां संहर्ता च द्विजोत्तम ॥४॥

4. ahaṁ nārāyaṇo nāma prabhavaḥ śāśvato'vyayaḥ ,
vidhātā sarvabhūtānāṁ saṁhartā ca dvijottama.

4. aham nārāyaṇaḥ nāma prabhavaḥ śāśvataḥ avyayaḥ
vidhātā sarvabhūtānām saṃhartā ca dvijottama

4. I am Nārāyaṇa by name, the eternal, imperishable source. I am the creator and destroyer of all beings, O best of the brahmins.

Words meanings summery:

• अहम् (aham) - I

• नारायणः (nārāyaṇaḥ) - Nārāyaṇa

• नाम (nāma) - by name (name; by name; indeed)

• प्रभवः (prabhavaḥ) - source (origin, source, generator)

• शाश्वतः (śāśvataḥ) - eternal (eternal, perpetual, permanent)

• अव्ययः (avyayaḥ) - imperishable (imperishable, immutable, indeclinable)

• विधाता (vidhātā) - creator (creator, ordainer, disposer)

• सर्वभूतानाम् (sarvabhūtānām) - of all beings (of all beings/creatures)

• संहर्ता (saṁhartā) - destroyer (destroyer, gatherer, withdrawer)

• च (ca) - and (and, also)

• द्विजोत्तम (dvijottama) - O best of the brahmins (best of the twice-born (brahmins, kshatriyas, vaishyas); best of birds/snakes/teeth)

Words meanings and morphology

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I

नारायणः (nārāyaṇaḥ) - Nārāyaṇa

(proper noun)

Nominative, masculine, singular of nārāyaṇa

nārāyaṇa - Nārāyaṇa (a name of Viṣṇu, literally 'resting on the waters')

नाम (nāma) - by name (name; by name; indeed)

(indeclinable)

Note: Used adverbially here, meaning 'by name' or 'called'.

प्रभवः (prabhavaḥ) - source (origin, source, generator)

(noun)

Nominative, masculine, singular of prabhava

prabhava - origin, source, birth, effect

Derived from pra + bhū (to be, to exist)

Prefix: pra

Root: bhū (class 1)

शाश्वतः (śāśvataḥ) - eternal (eternal, perpetual, permanent)

(adjective)

Nominative, masculine, singular of śāśvata

śāśvata - eternal, perpetual, permanent, constant

अव्ययः (avyayaḥ) - imperishable (imperishable, immutable, indeclinable)

(adjective)

Nominative, masculine, singular of avyaya

avyaya - imperishable, immutable, undeclining, indeclinable

Negation of vyaya (perishable or declining)

विधाता (vidhātā) - creator (creator, ordainer, disposer)

(noun)

Nominative, masculine, singular of vidhātṛ

vidhātṛ - creator, ordainer, arranger, dispenser

Agent noun

Formed from vi + dhā (to place, arrange, create) + tṛc suffix

Prefix: vi

Root: dhā (class 3)

सर्वभूतानाम् (sarvabhūtānām) - of all beings (of all beings/creatures)

(noun)

Genitive, neuter, plural of sarvabhūta

sarvabhūta - all beings, all creatures

Compound type : tatpuruṣa (sarva+bhūta)

• sarva – all, every
  adjective
• bhūta – a being, creature, element, what has been
  noun (neuter)
  Past Passive Participle
  Derived from root bhū (to be, exist)
  Root: bhū (class 1)

संहर्ता (saṁhartā) - destroyer (destroyer, gatherer, withdrawer)

(noun)

Nominative, masculine, singular of saṃhartṛ

saṁhartṛ - destroyer, withdrawer, gatherer, compiler

Agent noun

Formed from sam + hṛ (to seize, take away) + tṛc suffix

Prefix: sam

Root: hṛ (class 1)

च (ca) - and (and, also)

(indeclinable)

द्विजोत्तम (dvijottama) - O best of the brahmins (best of the twice-born (brahmins, kshatriyas, vaishyas); best of birds/snakes/teeth)

(noun)

Vocative, masculine, singular of dvijottama

dvijottama - best of the twice-born, chief of brahmins

Compound type : tatpuruṣa (dvija+uttama)

• dvija – twice-born (referring to Brahmins, Kshatriyas, Vaishyas); bird; tooth; snake
  noun (masculine)
  Formed from dvi (two) + jan (to be born)
  Root: jan (class 4)
• uttama – best, highest, supreme, excellent
  adjective (masculine)
  Superlative degree of 'ud' or 'ut'