योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-28, verse-65

आस्थारहितया बुद्ध्या विहर्तव्यमिहानघ ।
कर्तव्यमेव कर्तव्यमकर्तव्यमुपेक्ष्यते ॥ ६५ ॥

āsthārahitayā buddhyā vihartavyamihānagha ,
kartavyameva kartavyamakartavyamupekṣyate 65

65. āsthā-rahitayā buddhyā vihartavyam iha anagha
kartavyam eva kartavyam akartavyam upekṣyate

65. anagha iha āsthā-rahitayā buddhyā vihartavyam.
kartavyam eva kartavyam,
akartavyam upekṣyate.

65. O pure one, here, one should live with a mind free from strong attachment. That which is to be done must indeed be done, and that which is not to be done should be disregarded.

Words meanings summery:

• आस्था-रहितया (āsthā-rahitayā) - by that which is devoid of attachment/interest

• बुद्ध्या (buddhyā) - by the intellect, by the mind

• विहर्तव्यम् (vihartavyam) - one should dwell, one should live, should be engaged

• इह (iha) - here, in this world, in this matter

• अनघ (anagha) - O blameless one, O pure one, O faultless one

• कर्तव्यम् (kartavyam) - what should be done, duty

• एव (eva) - indeed, only, certainly

• कर्तव्यम् (kartavyam) - should be done, duty

• अकर्तव्यम् (akartavyam) - what should not be done, improper action

• उपेक्ष्यते (upekṣyate) - is disregarded, is neglected, is overlooked

Words meanings and morphology

आस्था-रहितया (āsthā-rahitayā) - by that which is devoid of attachment/interest

(adjective)

Instrumental, feminine, singular of āsthā-rahita

āsthā-rahita - devoid of attachment, free from interest

Compound type : bahuvrīhi (āsthā+rahita)

• āsthā – attachment, interest, faith, reliance
  noun (feminine)
• rahita – devoid of, free from, abandoned
  adjective
  Past Passive Participle
  From root 'rah' with suffix 'ita'
  Root: rah

बुद्ध्या (buddhyā) - by the intellect, by the mind

(noun)

Instrumental, feminine, singular of buddhi

buddhi - intellect, understanding, mind, reason

Root: budh (class 1)

विहर्तव्यम् (vihartavyam) - one should dwell, one should live, should be engaged

(adjective)

Nominative, neuter, singular of vihartavya

vihartavya - to be roamed, to be acted, to be lived

Gerundive

Root 'hṛ' with upasarga 'vi', suffix 'tavya'.

Prefix: vi

Root: hṛ (class 1)

Note: Used impersonally ('it should be lived')

इह (iha) - here, in this world, in this matter

(indeclinable)

अनघ (anagha) - O blameless one, O pure one, O faultless one

(adjective)

Vocative, masculine, singular of anagha

anagha - blameless, faultless, pure, sinless

कर्तव्यम् (kartavyam) - what should be done, duty

(adjective)

Nominative, neuter, singular of kartavya

kartavya - to be done, proper to be done, duty

Gerundive

Root 'kṛ' with suffix 'tavya'.

Root: kṛ (class 8)

Note: Used as a substantivized adjective.

एव (eva) - indeed, only, certainly

(indeclinable)

कर्तव्यम् (kartavyam) - should be done, duty

(adjective)

Nominative, neuter, singular of kartavya

kartavya - to be done, proper to be done, duty

Gerundive

Root 'kṛ' with suffix 'tavya'.

Root: kṛ (class 8)

अकर्तव्यम् (akartavyam) - what should not be done, improper action

(adjective)

Nominative, neuter, singular of akartavya

akartavya - not to be done, improper, forbidden

Gerundive (negative)

Negative prefix 'a' + Root 'kṛ' with suffix 'tavya'.

Root: kṛ (class 8)

Note: Used as a substantivized adjective.

उपेक्ष्यते (upekṣyate) - is disregarded, is neglected, is overlooked

(verb)

3rd person , singular, passive, present (laṭ) of upekṣ

Root 'īkṣ' with upasarga 'upa'.

Prefix: upa

Root: īkṣ (class 1)

Note: The root 'īkṣ' is typically ātmanepada (middle voice); 'upekṣyate' often functions passively.