योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-73, verse-7

स्थिरबुद्धिरसंमूढो यथाप्राप्तानुवर्तिनः ।
राज्ञो भगीरथस्येव दुःसाध्यमपि सिद्ध्यति ॥ ७ ॥

sthirabuddhirasaṃmūḍho yathāprāptānuvartinaḥ ,
rājño bhagīrathasyeva duḥsādhyamapi siddhyati 7

7. sthirabuddhiḥ asaṃmūḍhaḥ yathāprāptānuvartinaḥ
rājñaḥ bhagīrathasya iva duḥsādhyam api siddhyati

7. sthirabuddhiḥ asaṃmūḍhaḥ yathāprāptānuvartinaḥ
rājñaḥ bhagīrathasya iva duḥsādhyam api siddhyati

7. For one with a steady intellect, who is undeluded, and who acts in accordance with what naturally presents itself, even what is difficult to accomplish (duḥsādhya) is achieved, just as it was for King Bhagiratha.

Words meanings summery:

• स्थिरबुद्धिः (sthirabuddhiḥ) - one with a steady intellect, firm in understanding

• असंमूढः (asaṁmūḍhaḥ) - undeluded, unconfused, clear-minded

• यथाप्राप्तानुवर्तिनः (yathāprāptānuvartinaḥ) - one who follows what has come by itself, one who acts according to what naturally presents itself

• राज्ञः (rājñaḥ) - of the king

• भगीरथस्य (bhagīrathasya) - of Bhagiratha

• इव (iva) - like, as, as if

• दुःसाध्यम् (duḥsādhyam) - difficult to accomplish, hard to achieve, arduous

• अपि (api) - even, also, too, moreover

• सिद्ध्यति (siddhyati) - succeeds, is accomplished, is perfected

Words meanings and morphology

स्थिरबुद्धिः (sthirabuddhiḥ) - one with a steady intellect, firm in understanding

(adjective)

Nominative, masculine, singular of sthirabuddhi

sthirabuddhi - one with a steady intellect, firm in understanding

Bahuvrihi compound: 'one whose intellect (buddhi) is steady (sthira)'.

Compound type : Bahuvrihi (sthira+buddhi)

• sthira – steady, firm, unmoving, constant
  adjective (masculine)
  From root 'sthā' (to stand).
  Root: sthā (class 1)
• buddhi – intellect, understanding, discernment
  noun (feminine)
  From root 'budh' (to awaken, know) + 'ti' suffix.
  Root: budh (class 1)

Note: Refers to the implied subject 'one'.

असंमूढः (asaṁmūḍhaḥ) - undeluded, unconfused, clear-minded

(adjective)

Nominative, masculine, singular of asaṃmūḍha

asaṁmūḍha - undeluded, unconfused, clear-minded

Past Passive Participle (negative)

Negative prefix 'a' + 'saṃmūḍha' (confused, deluded). 'saṃmūḍha' from root 'muh' (to be bewildered) with prefix 'sam'.

Compound type : Nañ-Tatpurusha (a+saṃmūḍha)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• saṃmūḍha – confused, deluded, bewildered
  adjective (masculine)
  Past Passive Participle
  From root 'muh' (to be bewildered) with prefix 'sam' and suffix 'kta'.
  Prefix: sam
  Root: muh (class 4)

Note: Refers to the implied subject 'one'.

यथाप्राप्तानुवर्तिनः (yathāprāptānuvartinaḥ) - one who follows what has come by itself, one who acts according to what naturally presents itself

(adjective)

Nominative, masculine, singular of yathāprāptānuvartin

yathāprāptānuvartin - one who follows what has come by itself, one who acts according to what naturally presents itself

Compound: 'yathā' (as) + 'prāpta' (obtained, come) + 'anuvartin' (following). 'One who follows (anuvartin) what has been obtained (prāpta) just as it is (yathā)'.

Compound type : Bahuvrihi (yathā+prāpta+anuvartin)

• yathā – as, according to, just as
  indeclinable
• prāpta – obtained, arrived, reached, presented
  adjective (masculine)
  Past Passive Participle
  From root 'āp' (to obtain, reach) with prefix 'pra' and suffix 'kta'.
  Prefix: pra
  Root: āp (class 5)
• anuvartin – following, adhering to, conforming to
  adjective (masculine)
  Agent Noun
  From root 'vṛt' (to be, to exist) with prefix 'anu' and suffix 'ṇin'.
  Prefix: anu
  Root: vṛt (class 1)

Note: Refers to the implied subject 'one'.

राज्ञः (rājñaḥ) - of the king

(noun)

Genitive, masculine, singular of rājan

rājan - king, ruler

n-stem noun.

Root: rāj (class 1)

Note: Qualifies 'Bhagīrathasya'.

भगीरथस्य (bhagīrathasya) - of Bhagiratha

(proper noun)

Genitive, masculine, singular of bhagīratha

bhagīratha - Bhagiratha (a legendary king, famed for bringing the Ganges to earth)

Note: Refers to King Bhagiratha.

इव (iva) - like, as, as if

(indeclinable)

Particle of comparison.

दुःसाध्यम् (duḥsādhyam) - difficult to accomplish, hard to achieve, arduous

(noun)

Accusative, neuter, singular of duḥsādhya

duḥsādhya - difficult to accomplish, hard to achieve, arduous (duḥsādhya)

Gerundive (Karmaṇi Kṛt)

Compound of 'dus' (difficult, bad) + 'sādhya' (to be accomplished). 'sādhya' from root 'sādh' (to accomplish) + 'ṇyaT' or 'yat' suffix.

Compound type : Prādi-Tatpurusha (dus+sādhya)

• dus – bad, difficult, hard, ill
  indeclinable
  Prefix.
• sādhya – to be accomplished, practicable, curable
  adjective (neuter)
  Gerundive
  From root 'sādh' (to accomplish, succeed) + 'yat' or 'ṇyaT' suffix.
  Root: sādh (class 4)

Note: Object of 'siddhyati' (literally 'that which is difficult to accomplish succeeds').

अपि (api) - even, also, too, moreover

(indeclinable)

Particle.

सिद्ध्यति (siddhyati) - succeeds, is accomplished, is perfected

(verb)

3rd person , singular, active, present (laṭ) of sidh

Present tense, third person singular.

Root: sidh (class 4)

Note: The subject is 'duḥsādhyam api' (even the difficult thing).