योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-68, verse-3

सर्वार्थभावनात्यागे चिन्मात्रैकान्तभावितः ।
अत्यजं तमहं पूर्वकथार्थकलनामलम् ॥ ३ ॥

sarvārthabhāvanātyāge cinmātraikāntabhāvitaḥ ,
atyajaṃ tamahaṃ pūrvakathārthakalanāmalam 3

3. sarva-artha-bhāvanā-tyāge cit-mātra-ekānta-bhāvitaḥ
atyajam tam aham pūrva-kathā-artha-kalanā-malam

3. aham sarva-artha-bhāvanā-tyāge cit-mātra-ekānta-bhāvitaḥ
tam pūrva-kathā-artha-kalanā-malam atyajam

3. Having abandoned all mental constructs (bhāvanā) and cultivated an exclusive focus on pure consciousness (cit), I then cast off the impurity of all previous narratives and conceptualizations.

Words meanings summery:

• सर्व-अर्थ-भावना-त्यागे (sarva-artha-bhāvanā-tyāge) - in the abandonment of all mental constructs/conceptions of objects

• चित्-मात्र-एकान्त-भावितः (cit-mātra-ekānta-bhāvitaḥ) - having meditated exclusively on pure consciousness

• अत्यजम् (atyajam) - I abandoned, I cast off

• तम् (tam) - that

• अहम् (aham) - I

• पूर्व-कथा-अर्थ-कलना-मलम् (pūrva-kathā-artha-kalanā-malam) - the impurity of the conceptualization of past narratives/meanings

Words meanings and morphology

सर्व-अर्थ-भावना-त्यागे (sarva-artha-bhāvanā-tyāge) - in the abandonment of all mental constructs/conceptions of objects

(noun)

Locative, masculine, singular of sarva-artha-bhāvanā-tyāga

sarva-artha-bhāvanā-tyāga - abandonment of the mental constructs of all objects

Compound type : ṣaṣṭhī-tatpuruṣa (sarva-artha-bhāvanā+tyāga)

• sarva – all, every
  adjective
• artha – object, thing, purpose, meaning
  noun (masculine)
• bhāvanā – conception, mental construct, imagination, cultivation
  noun (feminine)
  Derived from causative root bhū (bhāvay-).
  Root: bhū (class 1)
• tyāga – abandonment, renunciation, giving up
  noun (masculine)
  Derived from root tyaj.
  Root: tyaj (class 1)

चित्-मात्र-एकान्त-भावितः (cit-mātra-ekānta-bhāvitaḥ) - having meditated exclusively on pure consciousness

(participle)

Nominative, masculine, singular of cit-mātra-ekānta-bhāvita

cit-mātra-ekānta-bhāvita - one who has exclusively contemplated pure consciousness

Past Passive Participle

Compound of cit (consciousness), mātra (only), ekānta (exclusive), bhāvita (cultivated/contemplated).

Compound type : bahuvrīhi (cit+mātra+ekānta+bhāvita)

• cit – consciousness, pure intelligence
  noun (feminine)
• mātra – only, mere, solely
  indeclinable
• ekānta – exclusive, solitary, unique, devoted to one object
  adjective (masculine)
• bhāvita – cultivated, contemplated, brought into existence, experienced
  participle (masculine)
  Past Passive Participle (from causative bhū)
  Derived from the causative form of root bhū.
  Root: bhū (class 1)

Note: Modifies 'aham'.

अत्यजम् (atyajam) - I abandoned, I cast off

(verb)

1st person , singular, active, imperfect (laṅ) of tyaj

Imperfect tense (laṅ) 1st person singular active. The 'a' is an augment for past tense, not an upasarga.

Root: tyaj (class 1)

तम् (tam) - that

(pronoun)

Accusative, masculine, singular of tad

tad - that (pronoun)

Note: Refers to the impurity.

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, we (first person pronoun)

पूर्व-कथा-अर्थ-कलना-मलम् (pūrva-kathā-artha-kalanā-malam) - the impurity of the conceptualization of past narratives/meanings

(noun)

Accusative, neuter, singular of pūrva-kathā-artha-kalanā-mala

pūrva-kathā-artha-kalanā-mala - the blemish/impurity arising from the conceptualization of previous stories or meanings

Compound type : ṣaṣṭhī-tatpuruṣa (pūrva-kathā-artha-kalanā+mala)

• pūrva – previous, past, former
  adjective
• kathā – story, narrative, tale
  noun (feminine)
• artha – meaning, purpose, object
  noun (masculine)
• kalanā – conceptualization, imagination, formation of ideas
  noun (feminine)
  Derived from root kal.
  Root: kal (class 10)
• mala – impurity, dirt, blemish, defilement
  noun (neuter)