योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-99, verse-6

यथास्थितव्यवहृतिर्मौनी शान्तमना मुनिः ।
सौम्यार्णवोदरावर्तपरिस्पन्दवदास्व भो ॥ ६ ॥

yathāsthitavyavahṛtirmaunī śāntamanā muniḥ ,
saumyārṇavodarāvartaparispandavadāsva bho 6

6. yathāsthita-vyavahṛtiḥ maunī śāntamanā muniḥ
saumyārṇavodarāvarta-parispandavat āsva bho

6. bho muniḥ,
yathāsthita-vyavahṛtiḥ,
maunī,
śāntamanā,
saumyārṇavodarāvarta-parispandavat āsva

6. Oh sage, whose conduct is in accordance with circumstances, be silent and possess a peaceful mind, like the movement of a whirlpool in the depths of a tranquil ocean.

Words meanings summery:

• यथास्थित-व्यवहृतिः (yathāsthita-vyavahṛtiḥ) - whose conduct is as it is; whose actions are in accordance with the existing situation

• मौनी (maunī) - silent; observing silence; an ascetic who has taken a vow of silence

• शान्तमना (śāntamanā) - peaceful-minded; having a calm mind

• मुनिः (muniḥ) - Oh sage (addressing the person) (sage, ascetic, an inspired person)

• सौम्यार्णवोदरावर्त-परिस्पन्दवत् (saumyārṇavodarāvarta-parispandavat) - like the movement of a whirlpool in the belly of a tranquil ocean

• आस्व (āsva) - Remain (in the described state) (be, remain, sit)

• भो (bho) - O!, Oh!, alas!

Words meanings and morphology

यथास्थित-व्यवहृतिः (yathāsthita-vyavahṛtiḥ) - whose conduct is as it is; whose actions are in accordance with the existing situation

(adjective)

Nominative, masculine, singular of yathāsthita-vyavahṛti

yathāsthita-vyavahṛti - one whose conduct or activities are as they are, in accordance with the existing state

Compound adjective describing the sage

Compound type : tatpuruṣa (yathāsthita+vyavahṛti)

• yathāsthita – as it is, as it stands, in its original state
  adjective
  Past Passive Participle
  From root 'sthā' with 'yathā' prefix
  Root: sthā (class 1)
• vyavahṛti – conduct, activity, practice, transaction
  noun (feminine)
  From root 'hṛ' with prefixes 'vi' and 'ava'
  Prefixes: vi+ava
  Root: hṛ (class 1)

मौनी (maunī) - silent; observing silence; an ascetic who has taken a vow of silence

(adjective)

Nominative, masculine, singular of maunin

maunin - silent, observing silence; a sage, an ascetic

Derived from 'muni' or 'muna'

शान्तमना (śāntamanā) - peaceful-minded; having a calm mind

(adjective)

Nominative, masculine, singular of śāntamanas

śāntamanas - having a tranquil mind, peaceful-minded

Compound

Compound type : bahuvrihi (śānta+manas)

• śānta – calm, tranquil, peaceful, pacified
  adjective
  Past Passive Participle
  From root 'śam' (to be calm)
  Root: śam (class 4)
• manas – mind, intellect, understanding, conscience
  noun (neuter)
  Root: man (class 4)

मुनिः (muniḥ) - Oh sage (addressing the person) (sage, ascetic, an inspired person)

(noun)

Nominative, masculine, singular of muni

muni - a sage, an ascetic, a holy man, an inspired person

Root: man (class 4)

Note: Used in a vocative sense

सौम्यार्णवोदरावर्त-परिस्पन्दवत् (saumyārṇavodarāvarta-parispandavat) - like the movement of a whirlpool in the belly of a tranquil ocean

(adjective)

of saumyārṇavodarāvarta-parispandavat

saumyārṇavodarāvarta-parispandavat - like the tremor/movement of a whirlpool in the depths of a tranquil ocean

Compound ending with 'vat' suffix meaning 'like'

Compound type : bahuvrihi (saumya+arṇava+udara+āvarta+parispanda+vat)

• saumya – tranquil, placid, gentle, moon-like
  adjective
  Derived from 'soma'
• arṇava – ocean, sea
  noun (masculine)
  Root: ṛ (class 3)
• udara – belly, interior, depths
  noun (neuter)
• āvarta – whirlpool, eddy, rolling, turning
  noun (masculine)
  From root 'vṛt' with prefix 'ā'
  Prefix: ā
  Root: vṛt (class 1)
• parispanda – trembling, throbbing, movement, vibration
  noun (masculine)
  From root 'spand' with prefix 'pari'
  Prefix: pari
  Root: spand (class 1)
• vat – like, as, similar to
  indeclinable
  Suffix indicating comparison

Note: Adverbial usage

आस्व (āsva) - Remain (in the described state) (be, remain, sit)

(verb)

2nd person , singular, middle, imperative (loṭ) of ās

Imperative, 2nd Person Singular, Middle Voice

Form from root 'ās' (div. 2), 'loṭ' (imperative), 'madhyama-puruṣa' (2nd person), 'eka-vacana' (singular), 'ātmanepada' (middle voice)

Root: ās (class 2)

भो (bho) - O!, Oh!, alas!

(indeclinable)

Vocative particle