महाभारतः mahābhārataḥ - book-12, chapter-290, verse-46

पक्षक्षयं तथा दृष्ट्वा दिवसानां च संक्षयम् ।
क्षयं वृद्धिं च चन्द्रस्य दृष्ट्वा प्रत्यक्षतस्तथा ॥४६॥

46. pakṣakṣayaṁ tathā dṛṣṭvā divasānāṁ ca saṁkṣayam ,
kṣayaṁ vṛddhiṁ ca candrasya dṛṣṭvā pratyakṣatastathā.

46. pakṣakṣayam tathā dṛṣṭvā divasānām ca saṃkṣayam
kṣayam vṛddhim ca candrasya dṛṣṭvā pratyakṣataḥ tathā

46. tathā pakṣakṣayam ca divasānām saṃkṣayam dṛṣṭvā ca
candrasya kṣayam vṛddhim tathā pratyakṣataḥ dṛṣṭvā

46. And having similarly observed the decline of lunar fortnights, and the total decrease of days; and having thus directly perceived the waning and waxing of the moon.

Words meanings summery:

• पक्षक्षयम् (pakṣakṣayam) - decline of lunar fortnights (decline of a fortnight, waning of the lunar half-month)

• तथा (tathā) - and, similarly (thus, so, in the same way, and)

• दृष्ट्वा (dṛṣṭvā) - having observed (having seen, having perceived)

• दिवसानाम् (divasānām) - of days

• च (ca) - and (and, also)

• संक्षयम् (saṁkṣayam) - total decrease (complete destruction, total decline)

• क्षयम् (kṣayam) - waning (decay, decline, destruction, loss)

• वृद्धिम् (vṛddhim) - waxing, growth (growth, increase, prosperity, waxing)

• च (ca) - and (and, also)

• चन्द्रस्य (candrasya) - of the moon

• दृष्ट्वा (dṛṣṭvā) - having perceived (having seen, having perceived)

• प्रत्यक्षतः (pratyakṣataḥ) - directly, with one's own eyes (directly, visibly, in person)

• तथा (tathā) - in the same way, similarly (thus, so, in the same way, and)

Words meanings and morphology

पक्षक्षयम् (pakṣakṣayam) - decline of lunar fortnights (decline of a fortnight, waning of the lunar half-month)

(noun)

Accusative, masculine, singular of pakṣakṣaya

pakṣakṣaya - decline of a fortnight (pakṣa), waning of the moon's phase

compound of pakṣa and kṣaya

Compound type : tatpuruṣa (pakṣa+kṣaya)

• pakṣa – side, party, wing, lunar fortnight
  noun (masculine)
• kṣaya – destruction, decay, loss, decline, end
  noun (masculine)
  from root kṣi (to destroy, decline)
  Root: kṣi (class 5)

तथा (tathā) - and, similarly (thus, so, in the same way, and)

(indeclinable)

दृष्ट्वा (dṛṣṭvā) - having observed (having seen, having perceived)

(indeclinable)

absolutive

formed from root dṛś (to see) with suffix -tvā

Root: dṛś (class 1)

दिवसानाम् (divasānām) - of days

(noun)

Genitive, masculine, plural of divasa

divasa - day

च (ca) - and (and, also)

(indeclinable)

संक्षयम् (saṁkṣayam) - total decrease (complete destruction, total decline)

(noun)

Accusative, masculine, singular of saṃkṣaya

saṁkṣaya - complete destruction, total decay, great loss, end, decrease

prādisamāsa compound of sam- and kṣaya

Compound type : tatpuruṣa (sam+kṣaya)

• sam – together, with, complete
  indeclinable
• kṣaya – destruction, decay, loss, decline, end
  noun (masculine)
  from root kṣi (to destroy, decline)
  Root: kṣi (class 5)

क्षयम् (kṣayam) - waning (decay, decline, destruction, loss)

(noun)

Accusative, masculine, singular of kṣaya

kṣaya - destruction, decay, loss, decline, end

from root kṣi (to destroy, decline)

Root: kṣi (class 5)

वृद्धिम् (vṛddhim) - waxing, growth (growth, increase, prosperity, waxing)

(noun)

Accusative, feminine, singular of vṛddhi

vṛddhi - growth, increase, prosperity, success, development

from root vṛdh (to grow, increase)

Root: vṛdh (class 1)

च (ca) - and (and, also)

(indeclinable)

चन्द्रस्य (candrasya) - of the moon

(noun)

Genitive, masculine, singular of candra

candra - moon, shining, bright

दृष्ट्वा (dṛṣṭvā) - having perceived (having seen, having perceived)

(indeclinable)

absolutive

formed from root dṛś (to see) with suffix -tvā

Root: dṛś (class 1)

प्रत्यक्षतः (pratyakṣataḥ) - directly, with one's own eyes (directly, visibly, in person)

(indeclinable)

from pratyakṣa (visible, perceptible) + suffix -tas

तथा (tathā) - in the same way, similarly (thus, so, in the same way, and)

(indeclinable)