योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-25, verse-41

प्राणस्तावद्विचार्यन्तेऽदेशकाले न शोच्यते ।
हृदि चन्द्रार्कयोर्ज्ञात्वा नित्यमस्तमयोदयम् ॥ ४१ ॥

prāṇastāvadvicāryante'deśakāle na śocyate ,
hṛdi candrārkayorjñātvā nityamastamayodayam 41

41. prāṇāḥ tāvat vicāryante adeśakāle na śocyate
hṛdi candrārkayoḥ jñātvā nityam astamayodayam

41. prāṇāḥ tāvat vicāryante.
hṛdi candrārkayoḥ nityam astamayodayam jñātvā adeśakāle na śocyate.

41. The vital energies (prāṇa) are reflected upon. One does not grieve at an inappropriate time or place, having realized the constant setting and rising of the moon and sun within the heart.

Words meanings summery:

• प्राणाः (prāṇāḥ) - vital airs, life-breaths, vital energies, life-forces

• तावत् (tāvat) - so long, meanwhile, thus far, indeed

• विचार्यन्ते (vicāryante) - are reflected upon, are considered, are investigated

• अदेशकाले (adeśakāle) - at an improper place and time, at an unsuitable time and place

• न (na) - not, no

• शोच्यते (śocyate) - is grieved, is lamented, one grieves

• हृदि (hṛdi) - in the heart, within the mind

• चन्द्रार्कयोः (candrārkayoḥ) - of the moon and the sun

• ज्ञात्वा (jñātvā) - having known, having understood, having realized

• नित्यम् (nityam) - constant, eternal, always

• अस्तमयोदयम् (astamayodayam) - setting and rising, disappearance and appearance

Words meanings and morphology

प्राणाः (prāṇāḥ) - vital airs, life-breaths, vital energies, life-forces

(noun)

Nominative, masculine, plural of prāṇa

prāṇa - breath, life, vital air, energy, spirit

From √an 'to breathe' with prefix `pra`.

Prefix: pra

Root: an (class 2)

Note: Subject of `vicāryante`.

तावत् (tāvat) - so long, meanwhile, thus far, indeed

(indeclinable)

Correlative to `yāvat`.

विचार्यन्ते (vicāryante) - are reflected upon, are considered, are investigated

(verb)

3rd person , plural, passive, present (laṭ) of vi-car

Passive form of causative `vicārayati`.

Prefix: vi

Root: car (class 1)

Note: The vital airs are the objects being reflected upon.

अदेशकाले (adeśakāle) - at an improper place and time, at an unsuitable time and place

(noun)

Locative, masculine, singular of adeśakāla

adeśakāla - improper place and time, unseasonable

Compound of `a` (negation) + `deśa` (place) + `kāla` (time).

Compound type : dvandva (a+deśa+kāla)

• a – not, non-, un-
  indeclinable
  Negative prefix
• deśa – place, country, region
  noun (masculine)
  Root: diś (class 6)
• kāla – time, season
  noun (masculine)

Note: Adverbial use indicating 'when/where'.

न (na) - not, no

(indeclinable)

Note: Negates `śocyate`.

शोच्यते (śocyate) - is grieved, is lamented, one grieves

(verb)

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

Passive voice, often used impersonally ('it is grieved').

Root: śuc (class 1)

Note: Impersonal passive construction.

हृदि (hṛdi) - in the heart, within the mind

(noun)

Locative, neuter, singular of hṛd

hṛd - heart, mind, soul, interior

Note: Location for the knowledge.

चन्द्रार्कयोः (candrārkayoḥ) - of the moon and the sun

(noun)

Genitive, masculine, dual of candrārka

candrārka - moon and sun

Compound of `candra` (moon) and `arka` (sun).

Compound type : dvandva (candra+arka)

• candra – moon, luminous
  noun (masculine)
• arka – sun, ray
  noun (masculine)

Note: Possessive of `astamayodayam`.

ज्ञात्वा (jñātvā) - having known, having understood, having realized

(indeclinable)

absolutive / gerund

Formed from √jñā with suffix `-tvā`.

Root: jñā (class 9)

Note: Indicates a preceding action.

नित्यम् (nityam) - constant, eternal, always

(adjective)

Accusative, neuter, singular of nitya

nitya - constant, eternal, perpetual, fixed, regular

Note: Can also be used adverbially.

अस्तमयोदयम् (astamayodayam) - setting and rising, disappearance and appearance

(noun)

Accusative, neuter, singular of astamayodaya

astamayodaya - setting and rising, disappearance and appearance

Compound of `astamaya` (setting) and `udaya` (rising).

Compound type : dvandva (astamaya+udaya)

• astamaya – setting, disappearance
  noun (masculine)
  From astam (to set) + aya (going)
• udaya – rising, appearance, origin
  noun (masculine)
  From ud + √i 'to go'
  Prefix: ud
  Root: i (class 2)

Note: Object of `jñātvā`.