वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-4, chapter-15, verse-13

प्रकृत्या निपुणश्चैव बुद्धिमांश्चैव वानरः ।
अपरीक्षितवीर्येण सुग्रीवः सह नैष्यति ॥१३॥

13. prakṛtyā nipuṇaścaiva buddhimāṃścaiva vānaraḥ ,
aparīkṣitavīryeṇa sugrīvaḥ saha naiṣyati.

13. prakṛtyā nipuṇaḥ ca eva buddhimān ca eva vānaraḥ
aparīkṣitavīryeṇa sugrīvaḥ saha na eṣyati

13. vānaraḥ prakṛtyā nipuṇaḥ eva ca buddhimān eva ca.
sugrīvaḥ aparīkṣitavīryeṇa saha na eṣyati

13. Sugrīva, being a monkey (vānara), is by nature skillful and indeed intelligent. He would certainly not ally himself with someone whose strength has not been proven.

Words meanings summery:

• प्रकृत्या (prakṛtyā) - by nature, naturally

• निपुणः (nipuṇaḥ) - Sugrīva is clever (skillful, clever, expert)

• च (ca) - and

• एव (eva) - emphasizes the quality (indeed, certainly, only)

• बुद्धिमान् (buddhimān) - Sugrīva is intelligent (intelligent, wise)

• च (ca) - and

• एव (eva) - indeed, certainly

• वानरः (vānaraḥ) - Sugrīva (monkey)

• अपरीक्षितवीर्येण (aparīkṣitavīryeṇa) - with someone of unproven strength (like Rāma, from Vāli's perspective) (with one whose strength has not been tested)

• सह (saha) - in alliance with (with, together with)

• न (na) - not

• एष्यति (eṣyati) - he will ally himself (he will come, go)

Words meanings and morphology

प्रकृत्या (prakṛtyā) - by nature, naturally

(noun)

Instrumental, feminine, singular of prakṛti

prakṛti - nature, origin, cause, primordial matter

Note: Adverbial usage.

निपुणः (nipuṇaḥ) - Sugrīva is clever (skillful, clever, expert)

(adjective)

Nominative, masculine, singular of nipuṇa

nipuṇa - skillful, clever, expert, able

Note: Qualifies 'vānaraḥ'.

च (ca) - and

(indeclinable)

Note: Connects 'nipuṇaḥ' and 'buddhimān'.

एव (eva) - emphasizes the quality (indeed, certainly, only)

(indeclinable)

Note: Intensifies the preceding adjective.

बुद्धिमान् (buddhimān) - Sugrīva is intelligent (intelligent, wise)

(adjective)

Nominative, masculine, singular of buddhimat

buddhimat - intelligent, wise, clever

Derived from buddhi with possessive suffix -mat

Note: Qualifies 'vānaraḥ'.

च (ca) - and

(indeclinable)

Note: Connects 'buddhimān' and 'eva'.

एव (eva) - indeed, certainly

(indeclinable)

Note: Intensifies the preceding adjective.

वानरः (vānaraḥ) - Sugrīva (monkey)

(noun)

Nominative, masculine, singular of vānara

vānara - monkey, ape

Note: Subject of the implicit verb 'is'.

अपरीक्षितवीर्येण (aparīkṣitavīryeṇa) - with someone of unproven strength (like Rāma, from Vāli's perspective) (with one whose strength has not been tested)

(adjective)

Instrumental, masculine, singular of aparīkṣitavīrya

aparīkṣitavīrya - whose strength is untested, of unproven valor

Compound type : bahuvrīhi (aparīkṣita+vīrya)

• aparīkṣita – untested, unexamined, not scrutinized
  adjective (masculine)
  Past Passive Participle
  Negative prefix 'a-' + Past Passive Participle of root īkṣ (to see) with prefix pari-
  Prefixes: a+pari
  Root: īkṣ (class 1)
• vīrya – strength, valor, heroism, energy
  noun (neuter)

Note: Companion with 'saha'.

सह (saha) - in alliance with (with, together with)

(indeclinable)

न (na) - not

(indeclinable)

Note: Negates 'eṣyati'.

एष्यति (eṣyati) - he will ally himself (he will come, go)

(verb)

3rd person , singular, active, future (lṛṭ) of i

Future Active

Derived from root i (to go)

Root: i (class 2)