योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-15, verse-12

नूनमस्तंगतो यत्र तृष्णाकृष्णनिशाक्रमः ।
पुण्यानि तत्र वर्धन्ते शुक्लपक्ष इवेन्दवः ॥ १२ ॥

nūnamastaṃgato yatra tṛṣṇākṛṣṇaniśākramaḥ ,
puṇyāni tatra vardhante śuklapakṣa ivendavaḥ 12

12. nūnam astaṃgataḥ yatra tṛṣṇākṛṣṇaniśākramaḥ
puṇyāni tatra vardhante śuklapakṣaḥ iva indavaḥ

12. yatra tṛṣṇākṛṣṇaniśākramaḥ nūnam astaṃgataḥ
tatra puṇyāni śuklapakṣaḥ iva indavaḥ vardhante

12. Surely, where the dark period of craving (tṛṣṇā) has set, there merits (puṇya) increase, just like the moons in the bright fortnight.

Words meanings summery:

• नूनम् (nūnam) - surely, certainly, indeed

• अस्तंगतः (astaṁgataḥ) - gone to set, set, disappeared

• यत्र (yatra) - where, in which place

• तृष्णाकृष्णनिशाक्रमः (tṛṣṇākṛṣṇaniśākramaḥ) - the succession of dark nights of craving

• पुण्यानि (puṇyāni) - merits, virtuous deeds

• तत्र (tatra) - there, in that place

• वर्धन्ते (vardhante) - they increase, they grow

• शुक्लपक्षः (śuklapakṣaḥ) - bright fortnight, waxing moon period

• इव (iva) - like, as, as if

• इन्दवः (indavaḥ) - moons

Words meanings and morphology

नूनम् (nūnam) - surely, certainly, indeed

(indeclinable)

अस्तंगतः (astaṁgataḥ) - gone to set, set, disappeared

(adjective)

Nominative, masculine, singular of astaṃgata

astaṁgata - set, gone to rest, disappeared

Past Passive Participle

Derived from gata (from root gam) with astaṃ (setting).

Compound type : tatpurusha (astam+gata)

• astam – setting, disappearance, home, west
  indeclinable
• gata – gone, reached, passed
  adjective (masculine)
  Past Passive Participle
  From root gam (to go)
  Root: gam (class 1)

Note: Participle functioning as an adjective.

यत्र (yatra) - where, in which place

(indeclinable)

तृष्णाकृष्णनिशाक्रमः (tṛṣṇākṛṣṇaniśākramaḥ) - the succession of dark nights of craving

(noun)

Nominative, masculine, singular of tṛṣṇākṛṣṇaniśākrama

tṛṣṇākṛṣṇaniśākrama - the sequence of dark nights of craving, craving as a dark period

Compound.

Compound type : karmadhāraya (tṛṣṇā+kṛṣṇaniśākrama)

• tṛṣṇā – thirst, craving, desire, longing
  noun (feminine)
  Root: tṛṣ (class 4)
• kṛṣṇaniśākrama – succession of dark nights, dark fortnight
  noun (masculine)
  Compound of kṛṣṇa (dark), niśā (night), krama (succession).

पुण्यानि (puṇyāni) - merits, virtuous deeds

(noun)

Nominative, neuter, plural of puṇya

puṇya - merit, virtue, good deed, auspicious, sacred

Note: Functions as the subject of vardhante.

तत्र (tatra) - there, in that place

(indeclinable)

वर्धन्ते (vardhante) - they increase, they grow

(verb)

3rd person , plural, middle, present (laṭ) of vṛdh

Present Middle Indicative

Ātmanepada verb.

Root: vṛdh (class 1)

शुक्लपक्षः (śuklapakṣaḥ) - bright fortnight, waxing moon period

(noun)

Nominative, masculine, singular of śuklapakṣa

śuklapakṣa - bright fortnight, waxing moon period

Compound.

Compound type : karmadhāraya (śukla+pakṣa)

• śukla – white, bright, clear
  adjective (masculine)
• pakṣa – wing, side, fortnight
  noun (masculine)

Note: Used in a simile.

इव (iva) - like, as, as if

(indeclinable)

इन्दवः (indavaḥ) - moons

(noun)

Nominative, masculine, plural of indu

indu - moon, drop, Soma

Note: Subject of comparison.