योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-93, verse-66

विधिभिः प्रतिषेधैश्च शाश्वतैरप्यशाश्वतैः ।
यथेष्टं नीयते लोको जलं निमनोन्नतैरिव ॥ ६६ ॥

vidhibhiḥ pratiṣedhaiśca śāśvatairapyaśāśvataiḥ ,
yatheṣṭaṃ nīyate loko jalaṃ nimanonnatairiva 66

66. vidhibhiḥ pratiṣedhaiḥ ca śāśvataiḥ api aśāśvataiḥ
yathā-iṣṭam nīyate lokaḥ jalam nimna-unnataiḥ iva

66. lokaḥ śāśvataiḥ api aśāśvataiḥ vidhibhiḥ pratiṣedhaiḥ ca,
nimna-unnataiḥ jalam iva,
yatheṣṭam nīyate.

66. The world (loka) is led according to various wishes by both eternal and even temporary injunctions (vidhi) and prohibitions, just as water is guided by depressions and elevations in the terrain.

Words meanings summery:

• विधिभिः (vidhibhiḥ) - by injunctions, by rules, by prescriptions

• प्रतिषेधैः (pratiṣedhaiḥ) - by prohibitions, by interdictions

• च (ca) - and

• शाश्वतैः (śāśvataiḥ) - by eternal, by perpetual

• अपि (api) - even, also, too

• अशाश्वतैः (aśāśvataiḥ) - by non-eternal, by temporary

• यथा-इष्टम् (yathā-iṣṭam) - as desired, arbitrarily, according to wish

• नीयते (nīyate) - is led, is guided, is carried, is brought

• लोकः (lokaḥ) - the world, people, humanity

• जलम् (jalam) - water

• निम्न-उन्नतैः (nimna-unnataiḥ) - by low and high places, by depressions and elevations

• इव (iva) - like, as, as if

Words meanings and morphology

विधिभिः (vidhibhiḥ) - by injunctions, by rules, by prescriptions

(noun)

Instrumental, masculine, plural of vidhi

vidhi - injunction, rule, regulation, method, destiny, fate

प्रतिषेधैः (pratiṣedhaiḥ) - by prohibitions, by interdictions

(noun)

Instrumental, masculine, plural of pratiṣedha

pratiṣedha - prohibition, interdiction, denial, obstruction

च (ca) - and

(indeclinable)

शाश्वतैः (śāśvataiḥ) - by eternal, by perpetual

(adjective)

Instrumental, masculine, plural of śāśvata

śāśvata - eternal, perpetual, constant, permanent

Note: Modifies 'vidhibhiḥ' and 'pratiṣedhaiḥ'.

अपि (api) - even, also, too

(indeclinable)

अशाश्वतैः (aśāśvataiḥ) - by non-eternal, by temporary

(adjective)

Instrumental, masculine, plural of aśāśvata

aśāśvata - non-eternal, temporary, transient

Compound type : tatpuruṣa (a+śāśvata)

• a – not, non-, un-
  prefix
• śāśvata – eternal, perpetual, constant
  adjective (masculine)

Note: Modifies 'vidhibhiḥ' and 'pratiṣedhaiḥ'.

यथा-इष्टम् (yathā-iṣṭam) - as desired, arbitrarily, according to wish

(indeclinable)

Compound type : avyayībhāva (yathā+iṣṭa)

• yathā – as, just as, in what manner
  indeclinable
• iṣṭa – desired, wished, beloved, sacrificed
  adjective (neuter)
  Past Passive Participle
  Derived from root iṣ ('to wish, desire').
  Root: iṣ (class 4)

Note: Functions as an adverb.

नीयते (nīyate) - is led, is guided, is carried, is brought

(verb)

3rd person , singular, passive, present (laṭ) of nī

Present Passive

Derived from root nī ('to lead') in passive voice.

Root: nī (class 1)

लोकः (lokaḥ) - the world, people, humanity

(noun)

Nominative, masculine, singular of loka

loka - world, realm, people, mankind

जलम् (jalam) - water

(noun)

Nominative, neuter, singular of jala

jala - water, fluid

निम्न-उन्नतैः (nimna-unnataiḥ) - by low and high places, by depressions and elevations

(noun)

Instrumental, masculine, plural of nimna-unnata

nimna-unnata - low and high, depressed and elevated

Compound type : dvandva (nimna+unnata)

• nimna – low, depressed, deep
  adjective (neuter)
• unnata – high, elevated, raised
  adjective (neuter)
  Past Passive Participle
  Derived from root nam ('to bend') with prefix ud-.
  Prefix: ud
  Root: nam (class 1)

Note: Used here to mean 'by high and low surfaces (of the ground)'.

इव (iva) - like, as, as if

(indeclinable)