योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-88, verse-13

अतः सुषुप्तोपमया धिया निष्कामया तया ।
सुषुप्तबुद्धसमया कुरु कार्यं यथागतम् ॥ १३ ॥

ataḥ suṣuptopamayā dhiyā niṣkāmayā tayā ,
suṣuptabuddhasamayā kuru kāryaṃ yathāgatam 13

13. ataḥ suṣuptopamayā dhiyā niṣkāmayā tayā
suṣuptabuddhasamayā kuru kāryam yathāgatam

13. ataḥ tayā suṣuptopamayā niṣkāmayā
suṣuptabuddhasamayā dhiyā yathāgatam kāryam kuru

13. Therefore, with that intellect (dhiyā) which is as calm as deep sleep, free from desire (niṣkāmayā), and with an awareness akin to an awakened one (buddha) even in deep repose, perform actions as they naturally arise.

Words meanings summery:

• अतः (ataḥ) - therefore (from this, hence, therefore)

• सुषुप्तोपमया (suṣuptopamayā) - by the similarity to deep sleep, serene like deep sleep (by the likeness of deep sleep, like deep sleep)

• धिया (dhiyā) - by the intellect (dhiyā) (by intellect, by understanding, by mind)

• निष्कामया (niṣkāmayā) - by the desireless (niṣkāmayā) (intellect) (by the desireless, by the disinterested)

• तया (tayā) - by that (intellect) (by that (feminine))

• सुषुप्तबुद्धसमया (suṣuptabuddhasamayā) - by the awareness akin to an awakened one (buddha) even in deep repose (by the similarity to an awakened one in deep sleep)

• कुरु (kuru) - perform (do, make, perform)

• कार्यम् (kāryam) - actions, work (work, duty, action, what is to be done)

• यथागतम् (yathāgatam) - as they naturally arise/present themselves (as it comes, as it arrives, as it happens)

Words meanings and morphology

अतः (ataḥ) - therefore (from this, hence, therefore)

(indeclinable)

Indeclinable adverb derived from 'idam'

सुषुप्तोपमया (suṣuptopamayā) - by the similarity to deep sleep, serene like deep sleep (by the likeness of deep sleep, like deep sleep)

(noun)

Instrumental, feminine, singular of suṣuptopamā

suṣuptopamā - likeness to deep sleep, simile of deep sleep

Compound type : tatpuruṣa (suṣupta+upamā)

• suṣupta – deep sleep, fast asleep
  adjective (neuter)
  Past Passive Participle
  Derived from root √svap (to sleep)
  Root: svap (class 2)
• upamā – comparison, simile, likeness, resemblance
  noun (feminine)

धिया (dhiyā) - by the intellect (dhiyā) (by intellect, by understanding, by mind)

(noun)

Instrumental, feminine, singular of dhī

dhī - thought, intellect, understanding, mind, intelligence

निष्कामया (niṣkāmayā) - by the desireless (niṣkāmayā) (intellect) (by the desireless, by the disinterested)

(adjective)

Instrumental, feminine, singular of niṣkāma

niṣkāma - desireless, free from desire, disinterested

Compound type : bahuvrīhi (nis+kāma)

• nis – out, forth, away, without
  indeclinable
  Prefix/upasarga
• kāma – desire, wish, longing
  noun (masculine)
  Root: kam (class 1)

Note: Agrees with 'dhiyā'

तया (tayā) - by that (intellect) (by that (feminine))

(pronoun)

Instrumental, feminine, singular of tad

tad - that, he, she, it

Note: Agrees with 'dhiyā'

सुषुप्तबुद्धसमया (suṣuptabuddhasamayā) - by the awareness akin to an awakened one (buddha) even in deep repose (by the similarity to an awakened one in deep sleep)

(adjective)

Instrumental, feminine, singular of suṣuptabuddhasamā

suṣuptabuddhasamā - similar to an awakened one in deep sleep, like one whose wisdom is profound and undisturbed like deep sleep

Compound type : tatpuruṣa (suṣupta+buddha+samā)

• suṣupta – deep sleep, fast asleep
  adjective (neuter)
  Past Passive Participle
  Derived from root √svap (to sleep)
  Root: svap (class 2)
• buddha – awakened, enlightened, known, understood
  adjective (masculine)
  Past Passive Participle
  Derived from root √budh (to awaken, know)
  Root: budh (class 1)
• samā – equal, like, similar
  adjective (feminine)

Note: Agrees with 'dhiyā'

कुरु (kuru) - perform (do, make, perform)

(verb)

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

Root: kṛ (class 8)

कार्यम् (kāryam) - actions, work (work, duty, action, what is to be done)

(noun)

Accusative, neuter, singular of kārya

kārya - work, duty, action, what is to be done

Gerundive/Future Passive Participle

Derived from root √kṛ (to do)

Root: kṛ (class 8)

यथागतम् (yathāgatam) - as they naturally arise/present themselves (as it comes, as it arrives, as it happens)

(adjective)

Accusative, neuter, singular of yathāgata

yathāgata - as it has come, arrived, presented itself

Compound type : avyayībhāva (yathā+āgata)

• yathā – as, just as, in the manner that
  indeclinable
• āgata – come, arrived, attained
  adjective (neuter)
  Past Passive Participle
  Derived from root √gam (to go) with prefix ā
  Prefix: ā
  Root: gam (class 1)

Note: Qualifies 'kāryam' or used adverbially.