योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-5, verse-19

विचारेण परिज्ञातवस्तुनोऽस्य जनस्य धीः ।
सर्वानधःकरोत्याधीन्सौम्याम्भ इव वालुकाः ॥ १९ ॥

vicāreṇa parijñātavastuno'sya janasya dhīḥ ,
sarvānadhaḥkarotyādhīnsaumyāmbha iva vālukāḥ 19

19. vicāreṇa parijñātavastunaḥ asya janasya dhīḥ sarvān
adhaḥ karoti ādhīn saumya ambhaḥ iva vālukāḥ

19. asya janasya vicāreṇa parijñātavastunaḥ dhīḥ sarvān
ādhīn adhaḥ karoti saumya ambhaḥ vālukāḥ iva

19. The intellect (dhīḥ) of this person, who has fully understood reality through deliberation, subdues all mental anxieties (ādhīn), just as gentle water subdues sand.

Words meanings summery:

• विचारेण (vicāreṇa) - by deliberation, by inquiry

• परिज्ञातवस्तुनः (parijñātavastunaḥ) - of one who has fully understood reality/truth/the object

• अस्य (asya) - of this

• जनस्य (janasya) - of the person, of the man

• धीः (dhīḥ) - intellect, understanding, thought

• सर्वान् (sarvān) - all

• अधः (adhaḥ) - down, below, underneath

• करोति (karoti) - subdues (in context with adhaḥ) (makes, does, performs, subdues)

• आधीन् (ādhīn) - mental anxieties, distresses

• सौम्य (saumya) - gentle, mild, lovely, moon-like

• अम्भः (ambhaḥ) - water

• इव (iva) - like, as, as if

• वालुकाः (vālukāḥ) - sand

Words meanings and morphology

विचारेण (vicāreṇa) - by deliberation, by inquiry

(noun)

Instrumental, masculine, singular of vicāra

vicāra - deliberation, investigation, thought, inquiry

from vi- + car (to move) with -a suffix

Prefix: vi

Root: car (class 1)

परिज्ञातवस्तुनः (parijñātavastunaḥ) - of one who has fully understood reality/truth/the object

(adjective)

Genitive, masculine, singular of parijñātavastu

parijñātavastu - one who has fully understood reality/truth/the object

Bahuvrihi compound: parijñāta (fully known) + vastu (thing/reality)

Compound type : bahuvrihi (parijñāta+vastu)

• parijñāta – fully known, completely understood
  adjective (masculine)
  Past Passive Participle
  from pari- + jñā (to know)
  Prefix: pari
  Root: jñā (class 9)
• vastu – thing, object, reality, substance, essence, truth
  noun (neuter)

अस्य (asya) - of this

(pronoun)

Genitive, masculine, singular of idam

idam - this

जनस्य (janasya) - of the person, of the man

(noun)

Genitive, masculine, singular of jana

jana - person, man, creature, folk

धीः (dhīḥ) - intellect, understanding, thought

(noun)

Nominative, feminine, singular of dhī

dhī - intellect, understanding, thought, wisdom

Root: dhyai (class 1)

सर्वान् (sarvān) - all

(pronoun)

Accusative, masculine, plural of sarva

sarva - all, every, whole

अधः (adhaḥ) - down, below, underneath

(indeclinable)

Note: This is an adverbial indeclinable. It forms a compound verb 'adhaḥ karoti' with 'karoti'.

करोति (karoti) - subdues (in context with adhaḥ) (makes, does, performs, subdues)

(verb)

3rd person , singular, active, present (laṭ) of kṛ

Root: kṛ (class 8)

Note: Forms a compound verb 'adhaḥ karoti' meaning 'to put down, subdue, destroy'.

आधीन् (ādhīn) - mental anxieties, distresses

(noun)

Accusative, masculine, plural of ādhi

ādhi - mental pain, anxiety, distress, woe

Root: dhā (class 3)

सौम्य (saumya) - gentle, mild, lovely, moon-like

(adjective)

Nominative, neuter, singular of saumya

saumya - relating to Soma or the moon; gentle, mild, lovely

From Soma, relating to Soma

Note: Agrees with 'ambhaḥ'.

अम्भः (ambhaḥ) - water

(noun)

Nominative, neuter, singular of ambhas

ambhas - water

इव (iva) - like, as, as if

(indeclinable)

वालुकाः (vālukāḥ) - sand

(noun)

Nominative, feminine, plural of vālukā

vālukā - sand, gravel