योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-12, verse-30

अर्धं मिथःसंकथया भागः शास्त्रविचारणैः ।
आत्मप्रत्ययतः शिष्टमविद्याया निवर्तते ॥ ३० ॥

ardhaṃ mithaḥsaṃkathayā bhāgaḥ śāstravicāraṇaiḥ ,
ātmapratyayataḥ śiṣṭamavidyāyā nivartate 30

30. ardham mithaḥ saṃkathayā bhāgaḥ śāstravicāraṇaiḥ
ātmapratyayataḥ śiṣṭam avidyāyā nivartate

30. ardham mithaḥ saṃkathayā (nivartate) bhāgaḥ śāstravicāraṇaiḥ
(nivartate) śiṣṭam avidyāyā ātmapratyayataḥ nivartate

30. Half of (ignorance) ceases through mutual discussion, and a portion through scriptural inquiry. The remaining part of ignorance (avidyā) is removed through self-conviction (ātmapratyaya).

Words meanings summery:

• अर्धम् (ardham) - half, a half portion

• मिथः (mithaḥ) - mutually, reciprocally, together

• संकथया (saṁkathayā) - by discussion, by conversation

• भागः (bhāgaḥ) - a portion, a part, a share

• शास्त्रविचारणैः (śāstravicāraṇaiḥ) - by scriptural inquiries, by examinations of scriptures

• आत्मप्रत्ययतः (ātmapratyayataḥ) - by self-conviction, from personal realization

• शिष्टम् (śiṣṭam) - the remainder, the rest, what is left

• अविद्याया (avidyāyā) - of ignorance, from ignorance (avidyā)

• निवर्तते (nivartate) - ceases, turns away, disappears, is removed

Words meanings and morphology

अर्धम् (ardham) - half, a half portion

(noun)

Nominative, neuter, singular of ardha

ardha - half, a part, a side

मिथः (mithaḥ) - mutually, reciprocally, together

(indeclinable)

संकथया (saṁkathayā) - by discussion, by conversation

(noun)

Instrumental, feminine, singular of saṃkathā

saṁkathā - conversation, discussion, talk

action noun

Prefix: sam

Root: kath (class 10)

भागः (bhāgaḥ) - a portion, a part, a share

(noun)

Nominative, masculine, singular of bhāga

bhāga - part, portion, share, division

Root: bhaj (class 1)

शास्त्रविचारणैः (śāstravicāraṇaiḥ) - by scriptural inquiries, by examinations of scriptures

(noun)

Instrumental, feminine, plural of śāstravicāraṇā

śāstravicāraṇā - inquiry into scriptures, discussion of texts, examination of sciences

action noun

Compound type : tatpuruṣa (śāstra+vicāraṇā)

• śāstra – scripture, treatise, sacred text, science
  noun (neuter)
  Root: śās (class 2)
• vicāraṇā – inquiry, examination, deliberation, discussion
  noun (feminine)
  action noun
  Prefix: vi
  Root: car (class 1)

आत्मप्रत्ययतः (ātmapratyayataḥ) - by self-conviction, from personal realization

(noun)

Ablative, masculine, singular of ātmapratyaya

ātmapratyaya - self-conviction, self-belief, personal realization

Compound type : tatpuruṣa (ātman+pratyaya)

• ātman – self, soul, spirit (ātman)
  noun (masculine)
• pratyaya – conviction, belief, idea, realization, trust
  noun (masculine)
  Prefix: prati
  Root: i (class 2)

Note: The suffix '-taḥ' indicates an ablative sense (from, by means of).

शिष्टम् (śiṣṭam) - the remainder, the rest, what is left

(adjective)

Nominative, neuter, singular of śiṣṭa

śiṣṭa - remaining, left, residual; that which is left

Past Passive Participle

Root: śiṣ (class 7)

Note: Functions as a noun here.

अविद्याया (avidyāyā) - of ignorance, from ignorance (avidyā)

(noun)

Genitive, feminine, singular of avidyā

avidyā - ignorance, nescience, spiritual ignorance

Note: The visarga (ḥ) of avidyāyāḥ is elided in the verse due to external sandhi before the consonant 'n'.

निवर्तते (nivartate) - ceases, turns away, disappears, is removed

(verb)

3rd person , singular, middle, present (lat) of nivṛt

Prefix: ni

Root: vṛt (class 1)