महाभारतः mahābhārataḥ - book-12, chapter-306, verse-55

तेनैतन्नाभिजानन्ति पञ्चविंशकमच्युतम् ।
जन्ममृत्युभयाद्योगाः सांख्याश्च परमैषिणः ॥५५॥

55. tenaitannābhijānanti pañcaviṁśakamacyutam ,
janmamṛtyubhayādyogāḥ sāṁkhyāśca paramaiṣiṇaḥ.

55. tena etat na abhijānanti pañcaviṃśakam acyutam
janmamṛtyubhayāt yogāḥ sāṅkhyāḥ ca paramaiṣiṇaḥ

55. tena janmamṛtyubhayāt parama-aiṣiṇaḥ yogāḥ ca
sāṅkhyāḥ etat acyutam pañcaviṃśakam na abhijānanti

55. Therefore, due to the fear of the cycle of birth and death (saṃsāra), these practitioners of yoga (yoga) and Sāṅkhya, who are striving for the supreme goal, do not truly understand this immutable twenty-fifth (principle, the individual self).

Words meanings summery:

• तेन (tena) - by that, therefore

• एतत् (etat) - this truth / this principle (this, this one)

• न (na) - not, no

• अभिजानन्ति (abhijānanti) - they know, they understand

• पञ्चविंशकम् (pañcaviṁśakam) - the twenty-fifth principle, referring to the individual self or subtle consciousness (jīva/buddhi) (the twenty-fifth (principle))

• अच्युतम् (acyutam) - the immutable nature of the twenty-fifth principle (individual self) (immutable, unfailing, imperishable)

• जन्ममृत्युभयात् (janmamṛtyubhayāt) - from the fear of the cycle of birth and death (saṃsāra) (from the fear of birth and death)

• योगाः (yogāḥ) - practitioners of yoga

• साङ्ख्याः (sāṅkhyāḥ) - followers of Sāṅkhya, Sāṅkhya philosophers

• च (ca) - and, also

• परम-ऐषिणः (parama-aiṣiṇaḥ) - those seeking the highest goal, aspirers to the supreme

Words meanings and morphology

तेन (tena) - by that, therefore

(pronoun)

Instrumental, neuter, singular of tad

tad - that, he, she, it

एतत् (etat) - this truth / this principle (this, this one)

(pronoun)

Accusative, neuter, singular of etad

etad - this, this one

न (na) - not, no

(indeclinable)

अभिजानन्ति (abhijānanti) - they know, they understand

(verb)

3rd person , plural, active, present (laṭ) of abhijānanti

Present tense, Parasmaipada

Prefix: abhi

Root: jñā (class 9)

पञ्चविंशकम् (pañcaviṁśakam) - the twenty-fifth principle, referring to the individual self or subtle consciousness (jīva/buddhi) (the twenty-fifth (principle))

(noun)

Accusative, masculine, singular of pañcaviṃśaka

pañcaviṁśaka - twenty-fifth

Compound type : karmadhāraya (pañcan+viṃśa)

• pañcan – five
  numeral
• viṃśa – twentieth
  adjective (masculine)

अच्युतम् (acyutam) - the immutable nature of the twenty-fifth principle (individual self) (immutable, unfailing, imperishable)

(adjective)

Accusative, masculine, singular of acyuta

acyuta - firm, imperishable, eternal, immutable

Compound type : nañ-tatpuruṣa (a+cyuta)

• a – not, un-
  indeclinable
  negative prefix
• cyuta – fallen, deviated, moved
  adjective (masculine)
  Past Passive Participle
  Root: cyu (class 1)

जन्ममृत्युभयात् (janmamṛtyubhayāt) - from the fear of the cycle of birth and death (saṃsāra) (from the fear of birth and death)

(noun)

Ablative, neuter, singular of janmamṛtyubhaya

janmamṛtyubhaya - fear of birth and death

Compound type : dvandva-tatpuruṣa (janman+mṛtyu+bhaya)

• janman – birth, origin
  noun (neuter)
  Root: jan (class 4)
• mṛtyu – death
  noun (masculine)
  Root: mṛ (class 6)
• bhaya – fear, dread
  noun (neuter)
  Root: bhī (class 3)

योगाः (yogāḥ) - practitioners of yoga

(noun)

Nominative, masculine, plural of yogin

yogin - one who practices yoga, a yogi

साङ्ख्याः (sāṅkhyāḥ) - followers of Sāṅkhya, Sāṅkhya philosophers

(noun)

Nominative, masculine, plural of sāṅkhya

sāṅkhya - follower of Sāṅkhya philosophy

च (ca) - and, also

(indeclinable)

परम-ऐषिणः (parama-aiṣiṇaḥ) - those seeking the highest goal, aspirers to the supreme

(noun)

Nominative, masculine, plural of parama-aiṣin

parama-aiṣin - seeking the highest

Compound type : tatpuruṣa (parama+eṣin)

• parama – highest, supreme, excellent
  adjective (masculine)
• eṣin – seeking, desiring
  adjective (masculine)
  agent noun/adjective from root iṣ with suffix -in
  Root: iṣ (class 4)