महाभारतः mahābhārataḥ - book-12, chapter-81, verse-6

चतुर्णां मध्यमौ श्रेष्ठौ नित्यं शङ्क्यौ तथापरौ ।
सर्वे नित्यं शङ्कितव्याः प्रत्यक्षं कार्यमात्मनः ॥६॥

6. caturṇāṁ madhyamau śreṣṭhau nityaṁ śaṅkyau tathāparau ,
sarve nityaṁ śaṅkitavyāḥ pratyakṣaṁ kāryamātmanaḥ.

6. caturṇām madhyamau śreṣṭhau nityam śaṅkyau tathā aparau
sarve nityam śaṅkitavyāḥ pratyakṣam kāryam ātmanaḥ

6. caturṇām madhyamau śreṣṭhau tathā aparau nityam śaṅkyau
sarve nityam śaṅkitavyāḥ ātmanaḥ kāryam pratyakṣam

6. Among the four, the two in the middle are superior, while the other two should always be regarded with suspicion. Indeed, all of them should always be regarded with suspicion, as one's own direct interest (ātman) is evident.

Words meanings summery:

• चतुर्णाम् (caturṇām) - of the four

• मध्यमौ (madhyamau) - the two middle ones

• श्रेष्ठौ (śreṣṭhau) - the two best, the two superior

• नित्यम् (nityam) - always, constantly

• शङ्क्यौ (śaṅkyau) - the two to be suspected, to be doubted

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

• अपरौ (aparau) - the other two

• सर्वे (sarve) - all

• नित्यम् (nityam) - always, constantly

• शङ्कितव्याः (śaṅkitavyāḥ) - to be suspected, to be doubted

• प्रत्यक्षम् (pratyakṣam) - evident, directly perceptible (direct, visible, evident, clear)

• कार्यम् (kāryam) - business, concern, matter (work, duty, business, concern, what is to be done)

• आत्मनः (ātmanaḥ) - of one's own direct interest (ātman) (of the self, of oneself, one's own, of the (ātman))

Words meanings and morphology

चतुर्णाम् (caturṇām) - of the four

(numeral)

मध्यमौ (madhyamau) - the two middle ones

(adjective)

Nominative, masculine, dual of madhyama

madhyama - middle, central

श्रेष्ठौ (śreṣṭhau) - the two best, the two superior

(adjective)

Nominative, masculine, dual of śreṣṭha

śreṣṭha - best, most excellent, superior (superlative of praśasya)

नित्यम् (nityam) - always, constantly

(indeclinable)

Adverbial usage of the neuter accusative singular form.

शङ्क्यौ (śaṅkyau) - the two to be suspected, to be doubted

(adjective)

Nominative, masculine, dual of śaṅkya

śaṅkya - to be suspected, to be doubted

gerundive

Formed from root √śaṅk + suffix -ya.

Root: śaṅk (class 1)

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

(indeclinable)

अपरौ (aparau) - the other two

(adjective)

Nominative, masculine, dual of apara

apara - other, different, subsequent

सर्वे (sarve) - all

(pronoun)

Nominative, masculine, plural of sarva

sarva - all, every

नित्यम् (nityam) - always, constantly

(indeclinable)

Adverbial usage of the neuter accusative singular form.

शङ्कितव्याः (śaṅkitavyāḥ) - to be suspected, to be doubted

(adjective)

Nominative, masculine, plural of śaṅkitavya

śaṅkitavya - to be suspected, to be doubted

gerundive

Formed from root √śaṅk + suffix -itavya.

Root: śaṅk (class 1)

प्रत्यक्षम् (pratyakṣam) - evident, directly perceptible (direct, visible, evident, clear)

(adjective)

neuter, singular of pratyakṣa

pratyakṣa - perceptible, visible, direct (literally 'before the eyes')

कार्यम् (kāryam) - business, concern, matter (work, duty, business, concern, what is to be done)

(noun)

Nominative, neuter, singular of kārya

kārya - work, duty, business, what is to be done

gerundive

Formed from root √kṛ + suffix -ya.

Root: kṛ (class 8)

आत्मनः (ātmanaḥ) - of one's own direct interest (ātman) (of the self, of oneself, one's own, of the (ātman))

(noun)

Genitive, masculine, singular of ātman

ātman - self, soul, spirit, one's own being