महाभारतः mahābhārataḥ - book-12, chapter-89, verse-16

सर्वे तथा न जीवेयुर्न कुर्युः कर्म चेदिह ।
सर्व एव त्रयो लोका न भवेयुरसंशयम् ॥१६॥

16. sarve tathā na jīveyurna kuryuḥ karma cediha ,
sarva eva trayo lokā na bhaveyurasaṁśayam.

16. sarve tathā na jīveyuḥ na kuryuḥ karma cet iha
sarve eva trayaḥ lokāḥ na bhaveyuḥ asaṃśayam

16. cet iha sarve tathā na jīveyuḥ karma na kuryuḥ
sarve eva trayaḥ lokāḥ asaṃśayam na bhaveyuḥ

16. If everyone in this world does not live accordingly and does not perform action (karma), then all three worlds would undoubtedly cease to exist.

Words meanings summery:

• सर्वे (sarve) - all, every

• तथा (tathā) - Refers to the way of living described previously or implied by context. (thus, so, in that manner, accordingly)

• न (na) - not, no

• जीवेयुः (jīveyuḥ) - they should live, they might live

• न (na) - not, no

• कुर्युः (kuryuḥ) - they should do/perform

• कर्म (karma) - Refers to prescribed duties or actions. (action, deed, work, ritual, destiny)

• चेत् (cet) - if, supposing that

• इह (iha) - here, in this world, at this time

• सर्वे (sarve) - Agrees with 'lokāḥ'. (all, every)

• एव (eva) - Emphasizes 'sarve trayaḥ lokāḥ'. (indeed, only, certainly)

• त्रयः (trayaḥ) - three

• लोकाः (lokāḥ) - Refers to the three traditional worlds (heaven, earth, underworld). (worlds, realms, people)

• न (na) - not, no

• भवेयुः (bhaveyuḥ) - they would be, they might exist, they should exist

• असंशयम् (asaṁśayam) - without doubt, undoubtedly, certainly, surely

Words meanings and morphology

सर्वे (sarve) - all, every

(pronoun)

Nominative, masculine, plural of sarva

sarva - all, every, whole, entire

तथा (tathā) - Refers to the way of living described previously or implied by context. (thus, so, in that manner, accordingly)

(indeclinable)

न (na) - not, no

(indeclinable)

जीवेयुः (jīveyuḥ) - they should live, they might live

(verb)

3rd person , plural, active, optative (vidhiliṅ) of jīv

Optative

Parasmaipada, 3rd person plural.

Root: jīv (class 1)

न (na) - not, no

(indeclinable)

कुर्युः (kuryuḥ) - they should do/perform

(verb)

3rd person , plural, active, optative (vidhiliṅ) of kṛ

Optative

Parasmaipada, 3rd person plural.

Root: kṛ (class 8)

कर्म (karma) - Refers to prescribed duties or actions. (action, deed, work, ritual, destiny)

(noun)

Accusative, neuter, singular of karman

karman - action, deed, work, ritual, religious act, destiny

From root kṛ (to do, make) with suffix -man.

Root: kṛ (class 8)

चेत् (cet) - if, supposing that

(indeclinable)

इह (iha) - here, in this world, at this time

(indeclinable)

सर्वे (sarve) - Agrees with 'lokāḥ'. (all, every)

(pronoun)

Nominative, masculine, plural of sarva

sarva - all, every, whole, entire

एव (eva) - Emphasizes 'sarve trayaḥ lokāḥ'. (indeed, only, certainly)

(indeclinable)

त्रयः (trayaḥ) - three

(numeral)

लोकाः (lokāḥ) - Refers to the three traditional worlds (heaven, earth, underworld). (worlds, realms, people)

(noun)

Nominative, masculine, plural of loka

loka - world, realm, space, people, a division of the universe

From root lok (to see).

Root: lok (class 10)

न (na) - not, no

(indeclinable)

भवेयुः (bhaveyuḥ) - they would be, they might exist, they should exist

(verb)

3rd person , plural, active, optative (vidhiliṅ) of bhū

Optative

Parasmaipada, 3rd person plural.

Root: bhū (class 1)

असंशयम् (asaṁśayam) - without doubt, undoubtedly, certainly, surely

(indeclinable)

Adverbial usage of a neuter noun (or a Nañ-tatpuruṣa compound meaning "no doubt").

Compound type : Nañ-tatpuruṣa (na+saṃśaya)

• na – not, no
  indeclinable
  negative particle
• saṃśaya – doubt, uncertainty
  noun (masculine)
  from sam-śī (to doubt)
  Prefix: sam
  Root: śī (class 2)

Note: Used adverbially.