योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-43, verse-39

आकारभासुरं त्यक्त्वा बाह्यमान्तरमप्यजम् ।
कुरु जन्मक्षयायाशु संविन्मात्रैकचिन्तनम् ॥ ३९ ॥

ākārabhāsuraṃ tyaktvā bāhyamāntaramapyajam ,
kuru janmakṣayāyāśu saṃvinmātraikacintanam 39

39. ākārabhāsuram tyaktvā bāhyam āntaram api ajam
kuru janmakṣayāya āśu saṃvinmātraikacintanam

39. ākārabhāsuram bāhyam āntaram api ajam tyaktvā,
āśu janmakṣayāya saṃvinmātraikacintanam kuru

39. Abandoning all that shines with form—be it external, internal, or even the unborn (ātman) itself when perceived with characteristics—quickly focus your contemplation solely on pure consciousness (saṃvit) for the cessation of future births (saṃsāra).

Words meanings summery:

• आकारभासुरम् (ākārabhāsuram) - shining with form, brilliantly formed

• त्यक्त्वा (tyaktvā) - having abandoned, having given up, having renounced

• बाह्यम् (bāhyam) - the external, external object or reality

• आन्तरम् (āntaram) - the internal, internal object or reality

• अपि (api) - also, even

• अजम् (ajam) - the unborn, the eternal (ātman)

• कुरु (kuru) - do, perform, undertake

• जन्मक्षयाय (janmakṣayāya) - for the destruction of birth, for the cessation of rebirth

• आशु (āśu) - quickly, swiftly, immediately

• संविन्मात्रैकचिन्तनम् (saṁvinmātraikacintanam) - contemplation solely on pure consciousness, meditation on consciousness alone

Words meanings and morphology

आकारभासुरम् (ākārabhāsuram) - shining with form, brilliantly formed

(adjective)

Accusative, neuter, singular of ākārabhāsura

ākārabhāsura - resplendent with form, shining with (outer) appearance

Compound type : tatpuruṣa (ākāra+bhāsura)

• ākāra – form, shape, appearance, external aspect
  noun (masculine)
• bhāsura – shining, radiant, brilliant
  adjective (masculine)
  Derived from root bhās (to shine).
  Root: bhās (class 1)

त्यक्त्वा (tyaktvā) - having abandoned, having given up, having renounced

(indeclinable)

absolutive / gerund

Formed from root tyaj (to abandon) with suffix -ktvā.

Root: tyaj (class 1)

बाह्यम् (bāhyam) - the external, external object or reality

(adjective)

Accusative, neuter, singular of bāhya

bāhya - external, outer, outward; external object

Derived from 'bahis' (outside).

आन्तरम् (āntaram) - the internal, internal object or reality

(adjective)

Accusative, neuter, singular of āntara

āntara - internal, inner, interior; intrinsic

Derived from 'antara' (inside).

अपि (api) - also, even

(indeclinable)

अजम् (ajam) - the unborn, the eternal (ātman)

(adjective)

Accusative, neuter, singular of aja

aja - unborn, not born, eternal, primeval; the Self (ātman); Brahmā, Viṣṇu, Śiva

Derived from 'a' (not) and root 'jan' (to be born).

Compound type : nañ-tatpuruṣa (a+ja)

• a – not, un-
  indeclinable
• ja – born, produced from
  adjective (masculine)
  verbal derivative (suffix -ja)
  Derived from root jan (to be born).
  Root: jan (class 4)

कुरु (kuru) - do, perform, undertake

(verb)

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

Root: kṛ (class 8)

जन्मक्षयाय (janmakṣayāya) - for the destruction of birth, for the cessation of rebirth

(noun)

Dative, masculine, singular of janmakṣaya

janmakṣaya - destruction of birth, end of rebirth

Compound type : śaṣṭhī tatpuruṣa (janman+kṣaya)

• janman – birth, existence, life
  noun (neuter)
  Root: jan (class 4)
• kṣaya – destruction, decay, loss, end
  noun (masculine)
  Derived from root kṣi (to destroy, perish).
  Root: kṣi (class 1)

आशु (āśu) - quickly, swiftly, immediately

(indeclinable)

संविन्मात्रैकचिन्तनम् (saṁvinmātraikacintanam) - contemplation solely on pure consciousness, meditation on consciousness alone

(noun)

Accusative, neuter, singular of saṃvinmātraikacintana

saṁvinmātraikacintana - contemplation of pure consciousness alone

Compound type : tatpuruṣa (saṃvid+mātra+eka+cintana)

• saṃvid – consciousness, knowledge, intelligence
  noun (feminine)
  Derived from root vid (to know) with upasarga sam.
  Prefix: sam
  Root: vid (class 2)
• mātra – only, merely, solely, just, mere
  indeclinable
• eka – one, single, sole, alone, unique
  adjective (masculine)
• cintana – thinking, reflection, contemplation, meditation
  noun (neuter)
  Derived from root cit (to perceive, think) with suffix -ana.
  Root: cit (class 1)