योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-91, verse-66

समूलं नश्यतः क्षिप्रं मूलच्छेदादिव द्रुमः ।
संविदं विद्धि संवेद्यं बीजं धीरतया विना ॥ ६६ ॥

samūlaṃ naśyataḥ kṣipraṃ mūlacchedādiva drumaḥ ,
saṃvidaṃ viddhi saṃvedyaṃ bījaṃ dhīratayā vinā 66

66. samūlam naśyataḥ kṣipram mūla-cchedāt iva drumaḥ
| saṃvidam viddhi saṃvedyam bījam dhīratayā vinā

66. (te dvau) samūlam kṣipram naśyataḥ,
drumaḥ mūla-cchedāt iva.
dhīratayā vinā saṃvidam saṃvedyam bījam viddhi.

66. They are swiftly destroyed root and all, just as a tree by the cutting of its root. Know consciousness (saṃvid) to be the perceivable object (saṃvedya), the seed, even without steadfastness.

Words meanings summery:

• समूलम् (samūlam) - with its root, root and all

• नश्यतः (naśyataḥ) - (they two) perish, are destroyed

• क्षिप्रम् (kṣipram) - swiftly, quickly

• मूल-च्छेदात् (mūla-cchedāt) - from cutting the root, by the uprooting

• इव (iva) - like, as, as it were

• द्रुमः (drumaḥ) - a tree

• संविदम् (saṁvidam) - consciousness, knowledge

• विद्धि (viddhi) - know (imperative)

• संवेद्यम् (saṁvedyam) - the perceivable object/sensation/cognitum

• बीजम् (bījam) - seed

• धीरतया (dhīratayā) - by steadfastness, with firmness

• विना (vinā) - without, except for

Words meanings and morphology

समूलम् (samūlam) - with its root, root and all

(adjective)

Accusative, neuter, singular of samūla

samūla - with its root, rooted

Formed with prefix sa- (with) and mūla (root). Used adverbially here.

Compound type : avyayībhāva (sa+mūla)

• sa – with, together, having
  indeclinable
• mūla – root, origin, foundation
  noun (neuter)

Note: Functions adverbially, meaning 'along with the root'.

नश्यतः (naśyataḥ) - (they two) perish, are destroyed

(participle)

Nominative, masculine, dual of naśyat

naśyat - perishing, being destroyed

Present Active Participle

From root naś (to perish, be lost). Used as a finite verb.

Root: naś (class 4)

Note: Refers to 'prāṇa-spandana' and 'vāsanā' from the previous verse.

क्षिप्रम् (kṣipram) - swiftly, quickly

(adjective)

Accusative, neuter, singular of kṣipra

kṣipra - swift, quick

Note: Functions adverbially.

मूल-च्छेदात् (mūla-cchedāt) - from cutting the root, by the uprooting

(noun)

Ablative, masculine, singular of mūla-ccheda

mūla-ccheda - cutting of the root, uprooting

Compound type : tatpuruṣa (mūla+cheda)

• mūla – root, origin, foundation
  noun (neuter)
• cheda – cutting, splitting, division
  noun (masculine)
  From root chid (to cut).
  Root: chid (class 7)

Note: Used to express cause or means, in a comparative sense.

इव (iva) - like, as, as it were

(indeclinable)

Particle of comparison.

द्रुमः (drumaḥ) - a tree

(noun)

Nominative, masculine, singular of druma

druma - tree

Root: dru

Note: Subject of the implied verb (e.g., 'is destroyed').

संविदम् (saṁvidam) - consciousness, knowledge

(noun)

Accusative, feminine, singular of saṃvid

saṁvid - consciousness, knowledge, understanding (saṃvid)

From root vid (to know) with prefix sam-.

Prefix: sam

Root: vid (class 2)

Note: Direct object of the verb 'viddhi'.

विद्धि (viddhi) - know (imperative)

(verb)

2nd person , singular, active, imperative (lot) of viddhi

Imperative Active

From root vid (to know, 2nd class). Irregular 2nd person singular imperative form.

Root: vid (class 2)

संवेद्यम् (saṁvedyam) - the perceivable object/sensation/cognitum

(noun)

Accusative, neuter, singular of saṃvedya

saṁvedya - perceivable, to be known, sensation, object of cognition

Gerundive / Future Passive Participle

From root vid (to know) with prefix sam-.

Prefix: sam

Root: vid (class 2)

Note: Predicate accusative, describing 'saṃvidam'.

बीजम् (bījam) - seed

(noun)

Accusative, neuter, singular of bīja

bīja - seed, origin, cause

Note: Appositive to 'saṃvedyam'.

धीरतया (dhīratayā) - by steadfastness, with firmness

(noun)

Instrumental, feminine, singular of dhīratā

dhīratā - steadfastness, firmness, courage, mental fortitude

Derived from dhīra (steady, firm) with the suffix -tā.

Note: Used with 'vinā'.

विना (vinā) - without, except for

(indeclinable)

Preposition/adverb.