योगवासिष्ठः yogavāsiṣṭhaḥ - book-2, chapter-18, verse-2

अपि पौरुषमादेयं शास्त्रं चेद्युक्तिबोधकम् ।
अन्यत्त्वार्षमपि त्याज्यं भाव्यं न्याय्यैकसेविना ॥ २ ॥

api pauruṣamādeyaṃ śāstraṃ cedyuktibodhakam ,
anyattvārṣamapi tyājyaṃ bhāvyaṃ nyāyyaikasevinā 2

2. api pauruṣam ādeyam śāstram cet yukti-bodhakam
anyat tu ārṣam api tyājyam bhāvyam nyāyya-eka-sevinā

2. yukti-bodhakam pauruṣam śāstram api cet ādeyam
anyat ārṣam api tu tyājyam nyāyya-eka-sevinā bhāvyam

2. Even a human-authored treatise should be accepted if it teaches reason; but any other, even if it originates from a sage (ārṣa), should be abandoned. One should indeed be a follower solely of justice and reason.

Words meanings summery:

• अपि (api) - even, also, too

• पौरुषम् (pauruṣam) - human-authored (text) (human, human-authored, manly)

• आदेयम् (ādeyam) - to be accepted, to be taken, admissible

• शास्त्रम् (śāstram) - scripture, treatise, instruction, science

• चेत् (cet) - if

• युक्ति-बोधकम् (yukti-bodhakam) - that which teaches reason/logic

• अन्यत् (anyat) - any other (treatise) (other, different)

• तु (tu) - but (but, on the other hand, indeed)

• आर्षम् (ārṣam) - originating from a sage (related to a sage, from a sage, ancient, inspired)

• अपि (api) - even, also, too

• त्याज्यम् (tyājyam) - to be abandoned, to be given up, rejectable

• भाव्यम् (bhāvyam) - (it) should be (that one is a follower) (to be, to be become, should be, ought to be done)

• न्याय्य-एक-सेविना (nyāyya-eka-sevinā) - by one who serves only justice/reason

Words meanings and morphology

अपि (api) - even, also, too

(indeclinable)

Note: Emphasizes 'even' a human-authored text.

पौरुषम् (pauruṣam) - human-authored (text) (human, human-authored, manly)

(adjective)

Nominative, neuter, singular of pauruṣa

pauruṣa - human, manly, powerful; related to puruṣa; human-authored

Derived from `puruṣa`.

Note: Agrees with `śāstram`.

आदेयम् (ādeyam) - to be accepted, to be taken, admissible

(adjective)

Nominative, neuter, singular of ādeya

ādeya - to be accepted, to be taken, admissible, worthy of being accepted

Gerundive / Future Passive Participle

From `ā` + root `dā` (to give/take) + `ya` suffix.

Prefix: ā

Root: dā (class 1)

शास्त्रम् (śāstram) - scripture, treatise, instruction, science

(noun)

Nominative, neuter, singular of śāstra

śāstra - sacred precept, religious treatise, scientific work, instruction

From root `śās` (to teach, instruct).

Root: śās (class 2)

Note: Subject of the clause.

चेत् (cet) - if

(indeclinable)

युक्ति-बोधकम् (yukti-bodhakam) - that which teaches reason/logic

(adjective)

Nominative, neuter, singular of yukti-bodhaka

yukti-bodhaka - teaching reason, conveying logic, instructing in proper method

Compound of `yukti` and `bodhaka`.

Compound type : tatpuruṣa (yukti+bodhaka)

• yukti – reason, logic, propriety, method
  noun (feminine)
  Derived from root `yuj` (to join, apply).
  Root: yuj (class 7)
• bodhaka – teaching, instructing, causing to awaken
  adjective
  Agent noun/adjective
  Derived from root `budh` (to awaken, know) with `ṇvul` suffix.
  Root: budh (class 1)

अन्यत् (anyat) - any other (treatise) (other, different)

(pronoun)

Nominative, neuter, singular of anya

anya - other, different, another

Note: Refers to `śāstram`.

तु (tu) - but (but, on the other hand, indeed)

(indeclinable)

आर्षम् (ārṣam) - originating from a sage (related to a sage, from a sage, ancient, inspired)

(adjective)

Nominative, neuter, singular of ārṣa

ārṣa - belonging to or coming from a ṛṣi (sage), sacred, archaic, inspired

Derived from `ṛṣi` (sage).

अपि (api) - even, also, too

(indeclinable)

Note: Emphasizes 'even' a sage-originated text.

त्याज्यम् (tyājyam) - to be abandoned, to be given up, rejectable

(adjective)

Nominative, neuter, singular of tyājya

tyājya - to be abandoned, to be given up, rejectable, discardable

Gerundive / Future Passive Participle

From root `tyaj` (to abandon) + `ya` suffix.

Root: tyaj (class 1)

भाव्यम् (bhāvyam) - (it) should be (that one is a follower) (to be, to be become, should be, ought to be done)

(adjective)

Nominative, neuter, singular of bhāvya

bhāvya - to be, to become, to be done, to be considered

Gerundive / Future Passive Participle

From root `bhū` (to be) + `ya` suffix.

Root: bhū (class 1)

न्याय्य-एक-सेविना (nyāyya-eka-sevinā) - by one who serves only justice/reason

(noun)

Instrumental, masculine, singular of nyāyya-eka-sevin

nyāyya-eka-sevin - one who serves only justice/reason, a sole follower of what is right

Compound of `nyāyya`, `eka`, and `sevin`.

Compound type : tatpuruṣa (nyāyya+eka+sevin)

• nyāyya – just, right, reasonable, proper
  adjective
  Gerundive
  Derived from `nyāya` (justice, logic, rule).
• eka – one, sole, only
  adjective
• sevin – serving, practicing, devoted to
  adjective (masculine)
  Agent noun/adjective
  Derived from root `sev` (to serve, frequent) with `ini` suffix.
  Root: sev (class 1)

Note: Agent of the passive verb `bhāvyam`.