योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-18, verse-40

पुरा भूत्वाद्य भूत्वा च भूयश्चेन्न भविष्यसि ।
तथापि क्षीणसंसारः किमर्थमनुशोचसि ॥ ४० ॥

purā bhūtvādya bhūtvā ca bhūyaścenna bhaviṣyasi ,
tathāpi kṣīṇasaṃsāraḥ kimarthamanuśocasi 40

40. purā bhūtvā adya bhūtvā ca bhūyaḥ cet na bhaviṣyasi
tathā api kṣīṇa-saṃsāraḥ kim-artham anuśocasi

40. purā bhūtvā adya bhūtvā ca cet bhūyaḥ na bhaviṣyasi
tathā api kṣīṇa-saṃsāraḥ kim-artham anuśocasi

40. If, having existed in the past and existing now, you will not exist again in the future, then even so, why do you, whose cycle of existence (saṃsāra) has ended, lament?

Words meanings summery:

• पुरा (purā) - formerly, in the past

• भूत्वा (bhūtvā) - having been, having existed

• अद्य (adya) - today, now

• भूत्वा (bhūtvā) - having been, having existed

• च (ca) - and, also

• भूयः (bhūyaḥ) - again, further, more

• चेत् (cet) - if

• न (na) - not, no

• भविष्यसि (bhaviṣyasi) - you will be, you will exist

• तथा (tathā) - similarly, thus, so

• अपि (api) - tathā api means "even so, nevertheless" (even, also, although)

• क्षीण-संसारः (kṣīṇa-saṁsāraḥ) - one whose cycle of existence (saṃsāra) is ended/diminished

• किम्-अर्थम् (kim-artham) - for what purpose, why

• अनुशोचसि (anuśocasi) - you grieve, you lament

Words meanings and morphology

पुरा (purā) - formerly, in the past

(indeclinable)

भूत्वा (bhūtvā) - having been, having existed

(indeclinable)

Absolutive (Gerund)

from root 'bhū' (to be) with suffix '-tvā'

Root: bhū (class 1)

अद्य (adya) - today, now

(indeclinable)

भूत्वा (bhūtvā) - having been, having existed

(indeclinable)

Absolutive (Gerund)

from root 'bhū' (to be) with suffix '-tvā'

Root: bhū (class 1)

च (ca) - and, also

(indeclinable)

भूयः (bhūyaḥ) - again, further, more

(indeclinable)

comparative of 'bahu'

चेत् (cet) - if

(indeclinable)

न (na) - not, no

(indeclinable)

भविष्यसि (bhaviṣyasi) - you will be, you will exist

(verb)

2nd person , singular, active, future (lṛṭ) of bhū

Future Active

root 'bhū', future tense, 2nd person singular, parasmaipada

Root: bhū (class 1)

तथा (tathā) - similarly, thus, so

(indeclinable)

अपि (api) - tathā api means "even so, nevertheless" (even, also, although)

(indeclinable)

क्षीण-संसारः (kṣīṇa-saṁsāraḥ) - one whose cycle of existence (saṃsāra) is ended/diminished

(adjective)

Nominative, masculine, singular of kṣīṇa-saṃsāra

kṣīṇa-saṁsāra - one whose transmigratory existence (saṃsāra) is ended or diminished

Bahuvrīhi compound: 'kṣīṇa' (diminished, exhausted) + 'saṃsāra' (cycle of existence)

Compound type : bahuvrīhi (kṣīṇa+saṃsāra)

• kṣīṇa – diminished, exhausted, wasted
  adjective (masculine)
  Past Passive Participle
  from root 'kṣi' (to waste away, destroy)
  Root: kṣi (class 5)
• saṃsāra – transmigratory existence, cycle of birth and death, worldly life
  noun (masculine)
  from sam-sṛ (to flow together, run through)
  Prefix: sam
  Root: sṛ (class 1)

Note: Agrees with implied 'tvam'.

किम्-अर्थम् (kim-artham) - for what purpose, why

(indeclinable)

Compound: 'kim' (what) + 'artha' (purpose, meaning)

Compound type : tatpuruṣa (kim+artha)

• kim – what, which, who
  pronoun (neuter)
• artha – purpose, meaning, wealth, object
  noun (masculine)

अनुशोचसि (anuśocasi) - you grieve, you lament

(verb)

2nd person , singular, active, present (laṭ) of anu-śuc

Present Active

root 'śuc', present tense, 2nd person singular, parasmaipada, with prefix 'anu'

Prefix: anu

Root: śuc (class 1)