योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-28, verse-27

पौरुषेण प्रयत्नेन यथा जानासि वा तथा ।
निवारयाहंभावांशमेषोऽसौ वासनाक्षयः ॥ २७ ॥

pauruṣeṇa prayatnena yathā jānāsi vā tathā ,
nivārayāhaṃbhāvāṃśameṣo'sau vāsanākṣayaḥ 27

27. pauruṣeṇa prayatnena yathā jānāsi vā tathā
nivāraya ahaṃ-bhāva-aṃśam eṣaḥ asau vāsanākṣayaḥ

27. yathā vā tathā pauruṣeṇa prayatnena
ahaṃ-bhāva-aṃśam nivāraya eṣaḥ asau vāsanākṣayaḥ

27. By human effort, in the way you comprehend, eliminate the aspect of the ego (ahaṅkāra); this very action constitutes the destruction of latent impressions (vāsanā).

Words meanings summery:

• पौरुषेण (pauruṣeṇa) - by human, by relating to a person

• प्रयत्नेन (prayatnena) - by effort, by exertion

• यथा (yathā) - as, in which way

• जानासि (jānāsi) - you know, you understand

• वा (vā) - or, either

• तथा (tathā) - so, thus, in that way

• निवारय (nivāraya) - ward off, remove, restrain

• अहं-भाव-अंशम् (ahaṁ-bhāva-aṁśam) - the aspect/part of the 'I'-sense / ego

• एषः (eṣaḥ) - this

• असौ (asau) - that (remote), yonder

• वासनाक्षयः (vāsanākṣayaḥ) - destruction of latent impressions

Words meanings and morphology

पौरुषेण (pauruṣeṇa) - by human, by relating to a person

(adjective)

Instrumental, masculine, singular of pauruṣa

pauruṣa - human, masculine, manly, relating to a person (puruṣa)

derived from puruṣa

प्रयत्नेन (prayatnena) - by effort, by exertion

(noun)

Instrumental, masculine, singular of prayatna

prayatna - effort, exertion, endeavour

Prefix: pra

Root: yat (class 1)

यथा (yathā) - as, in which way

(indeclinable)

जानासि (jānāsi) - you know, you understand

(verb)

2nd person , singular, active, present indicative (lat) of jñā

present indicative, 2nd person singular, parasmaipada, 9th class verb

Root: jñā (class 9)

वा (vā) - or, either

(indeclinable)

तथा (tathā) - so, thus, in that way

(indeclinable)

निवारय (nivāraya) - ward off, remove, restrain

(verb)

2nd person , singular, active, imperative (loṭ) of nivārayati

causative imperative, 2nd person singular

from ni-vṛ (to stop)

Prefix: ni

Root: vṛ (class 5)

Note: Causative form.

अहं-भाव-अंशम् (ahaṁ-bhāva-aṁśam) - the aspect/part of the 'I'-sense / ego

(noun)

Accusative, masculine, singular of ahaṃ-bhāva-aṃśa

ahaṁ-bhāva-aṁśa - the aspect/part of the 'I'-sense or ego (ahaṅkāra)

Compound of aham (I), bhāva (state/being/sense), and aṃśa (part/aspect)

Compound type : tatpuruṣa (aham+bhāva+aṃśa)

• aham – I, ego (ahaṅkāra)
  pronoun
• bhāva – state of being, nature, sentiment, feeling, sense
  noun (masculine)
  Root: bhū (class 1)
• aṃśa – part, portion, aspect
  noun (masculine)

Note: The term 'ahaṅkāra' (ego) is implied by 'ahaṃ-bhāva'.

एषः (eṣaḥ) - this

(pronoun)

Nominative, masculine, singular of etad

etad - this, this one

Note: Refers to vāsanākṣayaḥ.

असौ (asau) - that (remote), yonder

(pronoun)

Nominative, masculine, singular of adas

adas - that, yonder, such a one

Note: Emphasizes 'this (eṣaḥ) very (asau) destruction'.

वासनाक्षयः (vāsanākṣayaḥ) - destruction of latent impressions

(noun)

Nominative, masculine, singular of vāsanākṣaya

vāsanākṣaya - destruction or waning of latent impressions (vāsanā)

Compound of vāsanā (latent impression) + kṣaya (destruction)

Compound type : tatpuruṣa (vāsanā+kṣaya)

• vāsanā – latent impression, mental tendency, desire (vāsanā)
  noun (feminine)
  Root: vas (class 1)
• kṣaya – destruction, end, loss, decay
  noun (masculine)
  Root: kṣi (class 1)