योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-4, verse-18

नाहमस्मीति बुद्ध्वापि सोपपत्तिकमप्यलम् ।
जानानो ज्ञप्तिमात्रं च किमज्ञ इव मुह्यसि ॥ १८ ॥

nāhamasmīti buddhvāpi sopapattikamapyalam ,
jānāno jñaptimātraṃ ca kimajña iva muhyasi 18

18. na aham asmi iti buddhvā api sa-upapattikam api
alam jānānaḥ jñaptimātram ca kim ajñaḥ iva muhyasi

18. "aham na asmi" iti api sa-upapattikam alam buddhvā ca jñaptimātram jānānaḥ (tvam),
ajñaḥ iva kim muhyasi?

18. Why, even after realizing 'I am not this' with sufficient logical explanation, and knowing yourself to be mere consciousness (jñapti), do you remain deluded like an ignorant person?

Words meanings summery:

• न (na) - not

• अहम् (aham) - I

• अस्मि (asmi) - am, exist

• इति (iti) - thus, so

• बुद्ध्वा (buddhvā) - having understood, having known

• अपि (api) - even, also

• स-उपपत्तिकम् (sa-upapattikam) - with valid reasons, with logical explanation

• अपि (api) - even, also

• अलम् (alam) - sufficiently, enough, indeed

• जानानः (jānānaḥ) - knowing, recognizing

• ज्ञप्तिमात्रम् (jñaptimātram) - pure consciousness (jñapti) (mere knowledge, pure consciousness)

• च (ca) - and

• किम् (kim) - why? what?

• अज्ञः (ajñaḥ) - an ignorant one, a fool

• इव (iva) - like, as, as if

• मुह्यसि (muhyasi) - you are deluded, you are bewildered, you faint

Words meanings and morphology

न (na) - not

(indeclinable)

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, me

अस्मि (asmi) - am, exist

(verb)

1st person , singular, active, present (laṭ) of as

Root: as (class 2)

इति (iti) - thus, so

(indeclinable)

बुद्ध्वा (buddhvā) - having understood, having known

(indeclinable)

Absolutive

Root √budh (to know, awaken)

Root: budh (class 1)

अपि (api) - even, also

(indeclinable)

स-उपपत्तिकम् (sa-upapattikam) - with valid reasons, with logical explanation

(adjective)

Accusative, neuter, singular of sa-upapattika

sa-upapattika - endowed with valid reasons/proofs, with logical explanation

Compound type : bahuvrīhi (sa+upapattika)

• sa – with, accompanied by
  indeclinable
• upapattika – having valid reasons, reasonable
  adjective (neuter)

Note: Used adverbially here

अपि (api) - even, also

(indeclinable)

अलम् (alam) - sufficiently, enough, indeed

(indeclinable)

जानानः (jānānaḥ) - knowing, recognizing

(adjective)

Nominative, masculine, singular of jānāna

jānāna - knowing, understanding

Present Active Participle (middle)

Root √jñā (to know), middle voice present participle

Root: jñā (class 9)

ज्ञप्तिमात्रम् (jñaptimātram) - pure consciousness (jñapti) (mere knowledge, pure consciousness)

(noun)

Accusative, neuter, singular of jñaptimātra

jñaptimātra - mere knowledge, pure consciousness, solely cognition

Compound type : karmadhāraya (jñapti+mātra)

• jñapti – knowledge, cognition
  noun (feminine)
  Root: jñā (class 9)
• mātra – only, mere, exclusively
  adjective (neuter)

च (ca) - and

(indeclinable)

किम् (kim) - why? what?

(indeclinable)

Note: Used as an interrogative adverb here

अज्ञः (ajñaḥ) - an ignorant one, a fool

(noun)

Nominative, masculine, singular of ajña

ajña - ignorant, foolish, a fool

Compound type : tatpuruṣa (a+jñā)

• a – not, non-
  prefix
• jñā – knowing
  adjective (masculine)
  From root √jñā (to know)
  Root: jñā (class 9)

इव (iva) - like, as, as if

(indeclinable)

मुह्यसि (muhyasi) - you are deluded, you are bewildered, you faint

(verb)

2nd person , singular, active, present (laṭ) of muh

Root: muh (class 4)