योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-94, verse-4

उत्तिष्ठ सिद्धलोकेषु निवसावो यथास्थितम् ।
स्वास्पदस्थितयः सौम्याः स्वात्मसिद्धौ सुसाधनम् ॥ ४ ॥

uttiṣṭha siddhalokeṣu nivasāvo yathāsthitam ,
svāspadasthitayaḥ saumyāḥ svātmasiddhau susādhanam 4

4. uttiṣṭha siddhalokeṣu nivasāvaḥ yathāsthitam
svāspadasthitayaḥ saumyāḥ svātmasiddhau susādhanam

4. uttiṣṭha yathāsthitam siddhalokeṣu nivasāvaḥ
svāspadasthitayaḥ saumyāḥ svātmasiddhau susādhanam

4. Arise! Let us dwell in the worlds of perfected beings, just as we are. Those who are established in their own true being and are gentle are an excellent means for the realization of one's own self (ātman).

Words meanings summery:

• उत्तिष्ठ (uttiṣṭha) - Arise! (arise, stand up, get up)

• सिद्धलोकेषु (siddhalokeṣu) - in the worlds of perfected beings, in the worlds of accomplished ones

• निवसावः (nivasāvaḥ) - let us dwell (let us dwell, we two shall dwell)

• यथास्थितम् (yathāsthitam) - just as we are (as it is, as arranged, in the manner established)

• स्वास्पदस्थितयः (svāspadasthitayaḥ) - those who are established in their own true being (those who are established in their own abode, those who are established in their own true nature)

• सौम्याः (saumyāḥ) - gentle (gentle, mild, auspicious, pleasant)

• स्वात्मसिद्धौ (svātmasiddhau) - for the realization of one's own self (ātman) (in the realization of one's own self, in the perfection of the self)

• सुसाधनम् (susādhanam) - are an excellent means (an excellent means, a good instrument)

Words meanings and morphology

उत्तिष्ठ (uttiṣṭha) - Arise! (arise, stand up, get up)

(verb)

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

imperative

imperative 2nd person singular, active voice

Prefix: ut

Root: sthā (class 1)

सिद्धलोकेषु (siddhalokeṣu) - in the worlds of perfected beings, in the worlds of accomplished ones

(noun)

Locative, masculine, plural of siddhaloka

siddhaloka - world of perfected beings, world of accomplished ones

Compound type : tatpuruṣa (siddha+loka)

• siddha – perfected, accomplished, adept, supernatural being
  adjective (masculine)
  Past Passive Participle
  Derived from root sidh (to succeed, be accomplished)
  Root: sidh (class 4)
• loka – world, realm, people
  noun (masculine)

निवसावः (nivasāvaḥ) - let us dwell (let us dwell, we two shall dwell)

(verb)

1st person , dual, active, imperative (loṭ) of ni-vas

imperative

imperative 1st person dual, active voice

Prefix: ni

Root: vas (class 1)

यथास्थितम् (yathāsthitam) - just as we are (as it is, as arranged, in the manner established)

(indeclinable)

formed from yathā (as) and sthita (situated, stood)

Compound type : avyayībhāva (yathā+sthita)

• yathā – as, just as, in what manner
  indeclinable
• sthita – stood, standing, situated, existing
  adjective (neuter)
  Past Passive Participle
  Derived from root sthā (to stand)
  Root: sthā (class 1)

Note: This functions adverbially.

स्वास्पदस्थितयः (svāspadasthitayaḥ) - those who are established in their own true being (those who are established in their own abode, those who are established in their own true nature)

(adjective)

Nominative, masculine, plural of svāspadasthita

svāspadasthita - established in one's own place/foundation/self

Compound type : tatpuruṣa (sva+āspada+sthita)

• sva – one's own, self
  pronoun (masculine)
• āspada – abode, dwelling, seat, foundation
  noun (neuter)
• sthita – established, situated, standing
  adjective (masculine)
  Past Passive Participle
  Derived from root sthā (to stand)
  Root: sthā (class 1)

सौम्याः (saumyāḥ) - gentle (gentle, mild, auspicious, pleasant)

(adjective)

Nominative, masculine, plural of saumya

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

Note: Agrees with svāspadasthitayaḥ.

स्वात्मसिद्धौ (svātmasiddhau) - for the realization of one's own self (ātman) (in the realization of one's own self, in the perfection of the self)

(noun)

Locative, feminine, singular of svātmasiddhi

svātmasiddhi - realization of one's own self, perfection of the self

Compound type : tatpuruṣa (sva+ātman+siddhi)

• sva – one's own, self
  pronoun (masculine)
• ātman – self, soul, spirit, essence
  noun (masculine)
• siddhi – accomplishment, success, realization, perfection
  noun (feminine)
  Root: sidh (class 4)

Note: Functions as "for the purpose of" here.

सुसाधनम् (susādhanam) - are an excellent means (an excellent means, a good instrument)

(noun)

Nominative, neuter, singular of susādhana

susādhana - excellent means, good instrument, easily accomplished

Compound type : karmadhāraya (su+sādhana)

• su – good, well, excellent, easy
  indeclinable
• sādhana – means, instrument, accomplishment, proof
  noun (neuter)
  Root: sādh (class 5)

Note: Predicate nominative for an implied "are".