योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-163, verse-39

सुहृद्भूत्वा विवादेन द्वैताद्वैतविचारणा ।
कृता हृदयगेहेऽन्तरविद्याभस्ममार्जनी ॥ ३९ ॥

suhṛdbhūtvā vivādena dvaitādvaitavicāraṇā ,
kṛtā hṛdayagehe'ntaravidyābhasmamārjanī 39

39. suhṛdbhūtvā vivādena dvaitādvaitavicāraṇā
kṛtā hṛdayagehe antaḥ avidyābhasmamārjanī

39. suhṛdbhūtvā vivādena dvaitādvaitavicāraṇā kṛtā
(sā) hṛdayagehe antaḥ avidyābhasmamārjanī (abhūt)

39. Having adopted a friendly attitude, the investigation (vicāraṇā) into duality (dvaita) and non-duality (advaita) through debate was carried out. Within the inner chamber of the heart, it became a broom to sweep away the ashes of ignorance (avidyā).

Words meanings summery:

• सुहृद्भूत्वा (suhṛdbhūtvā) - having become a friend, having adopted a friendly attitude

• विवादेन (vivādena) - by means of dispute, through debate

• द्वैताद्वैतविचारणा (dvaitādvaitavicāraṇā) - the investigation or inquiry into duality and non-duality

• कृता (kṛtā) - made, done, performed, accomplished

• हृदयगेहे (hṛdayagehe) - in the house of the heart, in the heart's abode

• अन्तः (antaḥ) - within, inside, internal

• अविद्याभस्ममार्जनी (avidyābhasmamārjanī) - a broom for the ashes of ignorance (avidyā)

Words meanings and morphology

सुहृद्भूत्वा (suhṛdbhūtvā) - having become a friend, having adopted a friendly attitude

(indeclinable)

Absolutive (Gerund)

From 'suhṛd' (good heart/friend) + 'bhū' (to become) + 'ktvā' (tvā) suffix.

Root: bhū (class 1)

विवादेन (vivādena) - by means of dispute, through debate

(noun)

Instrumental, masculine, singular of vivāda

vivāda - dispute, controversy, debate, contention

From 'vi-vad' + 'a' suffix.

Prefix: vi

Root: vad (class 1)

द्वैताद्वैतविचारणा (dvaitādvaitavicāraṇā) - the investigation or inquiry into duality and non-duality

(noun)

Nominative, feminine, singular of dvaitādvaitavicāraṇā

dvaitādvaitavicāraṇā - investigation/inquiry into duality and non-duality

Compound type : tatpurusha (dvaita+advaita+vicāraṇā)

• dvaita – duality, the state of being two
  noun (neuter)
  Derived from 'dvi' (two) with 'ta' suffix.
• advaita – non-duality, oneness, the state of being not two
  noun (neuter)
  Negation 'a' + 'dvaita'.
• vicāraṇā – investigation, inquiry, deliberation, reflection
  noun (feminine)
  From 'vi-car' (to move about, ponder) + 'ana' suffix + 'ṭāp' for feminine.
  Prefix: vi
  Root: car (class 1)

कृता (kṛtā) - made, done, performed, accomplished

(adjective)

Nominative, feminine, singular of kṛta

kṛta - done, made, performed, created

Past Passive Participle

From root 'kṛ' (to do, make) + 'kta' (ta) suffix.

Root: kṛ (class 8)

हृदयगेहे (hṛdayagehe) - in the house of the heart, in the heart's abode

(noun)

Locative, neuter, singular of hṛdayageha

hṛdayageha - the house/abode of the heart

Compound type : tatpurusha (hṛdaya+geha)

• hṛdaya – heart, mind, core, essence
  noun (neuter)
• geha – house, dwelling, abode
  noun (neuter)

अन्तः (antaḥ) - within, inside, internal

(indeclinable)

अविद्याभस्ममार्जनी (avidyābhasmamārjanī) - a broom for the ashes of ignorance (avidyā)

(noun)

Nominative, feminine, singular of avidyābhasmamārjanī

avidyābhasmamārjanī - a broom for sweeping the ashes of ignorance

Compound type : tatpurusha (avidyā+bhasma+mārjanī)

• avidyā – ignorance, nescience, spiritual ignorance
  noun (feminine)
  Negation 'a' + 'vidyā' (knowledge).
• bhasma – ashes, holy ash
  noun (neuter)
  From root 'bhas' (to burn) + 'man' suffix.
  Root: bhas (class 1)
• mārjanī – a broom, cleaning brush, wiper
  noun (feminine)
  From root 'mṛj' (to clean) + 'ani' suffix.
  Root: mṛj (class 2)