योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-17, verse-13

तस्मिन्निरस्तनिःशेषसंकल्पा स्थितिमेषि चेत् ।
सर्वात्मकं पदं तत्त्वं त्वं तदाप्नोष्यसंशयम् ॥ १३ ॥

tasminnirastaniḥśeṣasaṃkalpā sthitimeṣi cet ,
sarvātmakaṃ padaṃ tattvaṃ tvaṃ tadāpnoṣyasaṃśayam 13

13. tasmin nirastaniḥśeṣasaṅkalpā sthitim eṣi cet |
sarvātmakam padam tattvam tvam tadā āpnoṣi asaṃśayam ||

13. nirastaniḥśeṣasaṅkalpā cet tasmin sthitim eṣi tadā
tvam sarvātmakam padam tattvam asaṃśayam āpnoṣi

13. If you, having dispelled all remaining mental constructs (saṅkalpa), attain steadfastness in that (state of consciousness), then you, without a doubt, will achieve that ultimate reality (tattva), the all-pervading state (pada).

Words meanings summery:

• तस्मिन् (tasmin) - in that state of consciousness described previously (in that, in that state)

• निरस्तनिःशेषसङ्कल्पा (nirastaniḥśeṣasaṅkalpā) - one whose entire mental constructs are dispelled

• स्थितिम् (sthitim) - state, abidance, steadfastness

• एषि (eṣi) - you go, you attain, you reach

• चेत् (cet) - if

• सर्वात्मकम् (sarvātmakam) - all-pervading, whose self is everything

• पदम् (padam) - the ultimate state or position (state, abode, position, step)

• तत्त्वम् (tattvam) - the ultimate truth or reality (truth, reality, principle)

• त्वम् (tvam) - you

• तदा (tadā) - then, at that time

• आप्नोषि (āpnoṣi) - you obtain, you reach, you achieve

• असंशयम् (asaṁśayam) - without doubt, certainly

Words meanings and morphology

तस्मिन् (tasmin) - in that state of consciousness described previously (in that, in that state)

(pronoun)

Locative, neuter, singular of tad

tad - that

निरस्तनिःशेषसङ्कल्पा (nirastaniḥśeṣasaṅkalpā) - one whose entire mental constructs are dispelled

(adjective)

Nominative, feminine, singular of nirastaniḥśeṣasaṅkalpa

nirastaniḥśeṣasaṅkalpa - one whose entire mental constructs are dispelled

Compound type : bahuvrihi (nirasta+niḥśeṣa+saṅkalpa)

• nirasta – cast off, dispelled, removed
  adjective (neuter)
  Past Passive Participle
  Prefix: nis
  Root: as (class 4)
• niḥśeṣa – all, entire, without remainder
  adjective (masculine)
  Prefix: nis
  Root: śiṣ (class 7)
• saṅkalpa – mental construct, intention, firm resolve
  noun (masculine)
  Prefix: sam
  Root: kḷp (class 1)

स्थितिम् (sthitim) - state, abidance, steadfastness

(noun)

Accusative, feminine, singular of sthiti

sthiti - state, abidance, steadfastness

Root: sthā (class 1)

एषि (eṣi) - you go, you attain, you reach

(verb)

2nd person , singular, active, present (laṭ) of i

Root: i (class 2)

चेत् (cet) - if

(indeclinable)

सर्वात्मकम् (sarvātmakam) - all-pervading, whose self is everything

(adjective)

neuter, singular of sarvātman

sarvātman - all-pervading, whose self is everything

Compound type : bahuvrihi (sarva+ātman)

• sarva – all, whole, every
  pronoun/adjective (neuter)
• ātman – Self, soul, essence
  noun (masculine)

पदम् (padam) - the ultimate state or position (state, abode, position, step)

(noun)

neuter, singular of pada

pada - state, abode, position, step

तत्त्वम् (tattvam) - the ultimate truth or reality (truth, reality, principle)

(noun)

neuter, singular of tattva

tattva - truth, reality, principle

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuşmad

yuşmad - you

तदा (tadā) - then, at that time

(indeclinable)

आप्नोषि (āpnoṣi) - you obtain, you reach, you achieve

(verb)

2nd person , singular, active, present (laṭ) of āp

Root: āp (class 5)

असंशयम् (asaṁśayam) - without doubt, certainly

(indeclinable)

Compound type : avyayibhāva (a+saṃśaya)

• a – not, without
  prefix
• saṃśaya – doubt, uncertainty
  noun (masculine)
  Prefix: sam
  Root: śi (class 7)