योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-1, verse-8

सर्वास्मरणमात्रात्मा तिष्ठायातेषु कर्मसु ।
अर्धसुप्तशिशुस्पन्द इवाभ्यस्तोपपत्तिषु ॥ ८ ॥

sarvāsmaraṇamātrātmā tiṣṭhāyāteṣu karmasu ,
ardhasuptaśiśuspanda ivābhyastopapattiṣu 8

8. sarvāsmaraṇamātrātmā tiṣṭha ayāteṣu karmasu
ardhasuptaśiśuspandaḥ iva abhyastopapattiṣu

8. sarvāsmaraṇamātrātmā ayāteṣu karmasu tiṣṭha
ardhasuptaśiśuspandaḥ iva abhyastopapattiṣu

8. Remain, with your (ātman) self consisting solely of the absence of all memory, engaged in ongoing (karma) actions, just like the subtle stirrings of a half-asleep child in familiar, habitual situations.

Words meanings summery:

• सर्वास्मरणमात्रात्मा (sarvāsmaraṇamātrātmā) - one whose essential nature (ātman) is merely the absence of all memory

• तिष्ठ (tiṣṭha) - stand, remain, stay, abide

• अयातेषु (ayāteṣu) - referring to actions that are present or still happening (in not-gone, in un-passed, in current, in ongoing)

• कर्मसु (karmasu) - in actions, in deeds, in works (karma)

• अर्धसुप्तशिशुस्पन्दः (ardhasuptaśiśuspandaḥ) - the movement/stirring of a half-asleep child

• इव (iva) - like, as, as if

• अभ्यस्तोपपत्तिषु (abhyastopapattiṣu) - in habitual occurrences, in familiar situations

Words meanings and morphology

सर्वास्मरणमात्रात्मा (sarvāsmaraṇamātrātmā) - one whose essential nature (ātman) is merely the absence of all memory

(noun)

Nominative, masculine, singular of sarvāsmaraṇamātrātman

sarvāsmaraṇamātrātman - one whose nature is merely the absence of all memory

Compound type : bahuvrīhi (sarva+asmaraṇa+mātra+ātman)

• sarva – all, every
  adjective (neuter)
• asmaraṇa – non-recollection, absence of memory
  noun (neuter)
  Negative particle 'a' + smaraṇa.
  Root: smṛ (class 1)
• mātra – mere, only, exclusively
  adjective (neuter)
• ātman – self, soul, essential nature (ātman)
  noun (masculine)

तिष्ठ (tiṣṭha) - stand, remain, stay, abide

(verb)

2nd person , singular, active, imperative (loṭ) of sthā

Imperative 2nd Person Singular

From root sthā (Pāṇinian class 1), 2nd person singular imperative active voice.

Root: sthā (class 1)

अयातेषु (ayāteṣu) - referring to actions that are present or still happening (in not-gone, in un-passed, in current, in ongoing)

(participle)

Locative, neuter, plural of ayāta

ayāta - not gone, un-passed, not happened, current, ongoing

Past Passive Participle

Negative particle 'a' + yāta (Past Passive Participle of root yā 'to go').

Compound type : nañ-tatpuruṣa (a+yāta)

• a – not, non-
  indeclinable
• yāta – gone, passed, happened
  participle (masculine)
  Past Passive Participle
  Past Passive Participle of root yā (to go).
  Root: yā (class 2)

Note: Modifies 'karmasu'.

कर्मसु (karmasu) - in actions, in deeds, in works (karma)

(noun)

Locative, neuter, plural of karma

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

Derived from root kṛ (to do, make).

Root: kṛ (class 8)

अर्धसुप्तशिशुस्पन्दः (ardhasuptaśiśuspandaḥ) - the movement/stirring of a half-asleep child

(noun)

Nominative, masculine, singular of ardhasuptaśiśuspanda

ardhasuptaśiśuspanda - the movement or stirring of a half-asleep child

Compound type : tatpuruṣa (ardhasupta+śiśu+spanda)

• ardha – half, part
  adjective (masculine)
• supta – asleep, sleeping
  participle (masculine)
  Past Passive Participle
  Past Passive Participle of root svap (to sleep).
  Root: svap (class 2)
• śiśu – child, infant
  noun (masculine)
• spanda – trembling, throbbing, movement, vibration
  noun (masculine)
  Derived from root spand (to tremble, vibrate).
  Root: spand (class 1)

इव (iva) - like, as, as if

(indeclinable)

अभ्यस्तोपपत्तिषु (abhyastopapattiṣu) - in habitual occurrences, in familiar situations

(noun)

Locative, feminine, plural of abhyastopapatti

abhyastopapatti - habitual occurrence, familiar situation, accustomed fitness

Compound type : tatpuruṣa (abhyasta+upapatti)

• abhyasta – practiced, habitual, accustomed
  participle (neuter)
  Past Passive Participle
  Past Passive Participle of root as (to throw) with prefixes abhi and a.
  Prefixes: abhi+a
  Root: as (class 4)
• upapatti – occurrence, fitness, appropriateness, possibility, situation
  noun (feminine)
  From root pad (to go, fall) with prefix upa.
  Prefix: upa
  Root: pad (class 4)