योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-19, verse-20

मनसा कर्मणा वाचा यदा क्षुभ्यति नो वपुः ।
शान्तात्मा तिष्ठति स्वस्थो जीवधातुस्तदा त्वसौ ॥ २० ॥

manasā karmaṇā vācā yadā kṣubhyati no vapuḥ ,
śāntātmā tiṣṭhati svastho jīvadhātustadā tvasau 20

20. manasā karmaṇā vācā yadā kṣubhyati naḥ vapuḥ
śānta-ātmā tiṣṭhati svasthaḥ jīva-dhātuḥ tadā tu asau

20. yadā vapuḥ manasā karmaṇā vācā naḥ kṣubhyati,
tadā asau jīva-dhātuḥ śānta-ātmā svasthaḥ tiṣṭhati.

20. When the body (vapuḥ) is not agitated by mind, action, or speech, then that living essence (jīvadhātu) remains calm (śāntātman) and self-abiding.

Words meanings summery:

• मनसा (manasā) - by the mind

• कर्मणा (karmaṇā) - by action, by deed, by work

• वाचा (vācā) - by speech, by word

• यदा (yadā) - when

• क्षुभ्यति (kṣubhyati) - is agitated, is disturbed, trembles

• नः (naḥ) - not

• वपुः (vapuḥ) - body, form, figure

• शान्त-आत्मा (śānta-ātmā) - calm (ātman) (one whose self (ātman) is calm, calm-natured)

• तिष्ठति (tiṣṭhati) - stands, remains, abides, exists

• स्वस्थः (svasthaḥ) - self-abiding, healthy, at ease, oneself

• जीव-धातुः (jīva-dhātuḥ) - the living essence, life-element

• तदा (tadā) - then, at that time

• तु (tu) - but, however, indeed

• असौ (asau) - that one, he, she, it

Words meanings and morphology

मनसा (manasā) - by the mind

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, consciousness

कर्मणा (karmaṇā) - by action, by deed, by work

(noun)

Instrumental, neuter, singular of karman

karman - action, deed, work, ritual action (karma)

वाचा (vācā) - by speech, by word

(noun)

Instrumental, feminine, singular of vāc

vāc - speech, word, voice

यदा (yadā) - when

(indeclinable)

क्षुभ्यति (kṣubhyati) - is agitated, is disturbed, trembles

(verb)

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

Root: kṣubh (class 4)

नः (naḥ) - not

(indeclinable)

Note: Here, 'no' in Devanagari is resolved to 'naḥ' for sandhi undoing, although the meaning is 'na' (not).

वपुः (vapuḥ) - body, form, figure

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, figure

शान्त-आत्मा (śānta-ātmā) - calm (ātman) (one whose self (ātman) is calm, calm-natured)

(noun)

Nominative, masculine, singular of śānta-ātman

śānta-ātman - calm-souled, tranquil-minded, one whose self is at peace

Compound type : bahuvrīhi (śānta+ātman)

• śānta – calm, peaceful, tranquil
  adjective (masculine)
  Past Passive Participle
  Derived from root śam (to be calm)
  Root: śam (class 4)
• ātman – self, soul, spirit, essential nature (ātman)
  noun (masculine)

तिष्ठति (tiṣṭhati) - stands, remains, abides, exists

(verb)

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

Root: sthā (class 1)

स्वस्थः (svasthaḥ) - self-abiding, healthy, at ease, oneself

(adjective)

Nominative, masculine, singular of svastha

svastha - self-abiding, healthy, at ease, situated in oneself

Compound type : bahuvrīhi (sva+stha)

• sva – self, own
  pronoun (masculine)
• stha – standing, situated, abiding
  adjective (masculine)
  Kṛt suffix -ṭha
  Derived from root sthā (to stand)
  Root: sthā (class 1)

जीव-धातुः (jīva-dhātuḥ) - the living essence, life-element

(noun)

Nominative, masculine, singular of jīva-dhātu

jīva-dhātu - living element, vital principle, life-essence

Compound type : tatpuruṣa (jīva+dhātu)

• jīva – living, alive; life, soul
  adjective (masculine)
  Root: jīv (class 1)
• dhātu – element, constituent, root, primary substance
  noun (masculine)

तदा (tadā) - then, at that time

(indeclinable)

तु (tu) - but, however, indeed

(indeclinable)

असौ (asau) - that one, he, she, it

(pronoun)

Nominative, masculine, singular of adas

adas - that, this, yonder (demonstrative pronoun)