महाभारतः mahābhārataḥ - book-6, chapter-30, verse-16

आ ब्रह्मभुवनाल्लोकाः पुनरावर्तिनोऽर्जुन ।
मामुपेत्य तु कौन्तेय पुनर्जन्म न विद्यते ॥१६॥

16. ā brahmabhuvanāllokāḥ punarāvartino'rjuna ,
māmupetya tu kaunteya punarjanma na vidyate.

16. ā brahmabhuvanāt lokāḥ punaḥ āvartinaḥ arjuna
mām upetya tu kaunteya punaḥ janma na vidyate

16. arjuna ā brahmabhuvanāt lokāḥ punaḥ āvartinaḥ
tu kaunteya mām upetya punaḥ janma na vidyate

16. O Arjuna, all worlds, even up to the abode of Brahmā (brahmabhuvanāt), are subject to repeated return (saṃsāra). However, O son of Kuntī, for those who reach Me, there is no further rebirth (punarjanma).

Words meanings summery:

• आ (ā) - indicating "up to" or "including" the highest realm (Brahmaloka) (up to, until, even, all around)

• ब्रह्मभुवनात् (brahmabhuvanāt) - indicating the highest material world, Brahmaloka (from the realm of Brahmā, up to the world of Brahmā)

• लोकाः (lokāḥ) - the various planetary systems/realms (worlds, realms, people)

• पुनः (punaḥ) - again (referring to repeated return) (again, anew, but)

• आवर्तिनः (āvartinaḥ) - destined to return (to the cycle of rebirth) (subject to return, revolving, turning back)

• अर्जुन (arjuna) - O Arjuna (name of Pāṇḍava prince)

• माम् (mām) - referring to Lord Krishna/the Supreme Being (Me, to Me)

• उपेत्य (upetya) - having reached Me (Lord Krishna) (having approached, having attained, having reached)

• तु (tu) - introduces a contrast or emphasis (but, indeed, on the other hand)

• कौन्तेय (kaunteya) - O Arjuna (Kuntī is another name for Pṛthā) (O son of Kuntī)

• पुनः (punaḥ) - again (referring to rebirth) (again, anew, but)

• जन्म (janma) - rebirth (punarjanma refers to cyclical existence) (birth, rebirth, origin, existence)

• न (na) - not, no

• विद्यते (vidyate) - does not exist (rebirth) (exists, is found, is present)

Words meanings and morphology

आ (ā) - indicating "up to" or "including" the highest realm (Brahmaloka) (up to, until, even, all around)

(indeclinable)

Preposition/prefix/adverb.

ब्रह्मभुवनात् (brahmabhuvanāt) - indicating the highest material world, Brahmaloka (from the realm of Brahmā, up to the world of Brahmā)

(noun)

Ablative, neuter, singular of brahmabhuvana

brahmabhuvana - the world of Brahmā, Brahmaloka, the highest planetary system

Compound type : tatpuruṣa (brahma+bhuvana)

• brahma – Brahmā (the creator deity)
  proper noun (masculine)
• bhuvana – world, realm, abode, existence
  noun (neuter)
  From root bhū (to be, to exist)
  Root: bhū (class 1)

Note: Indicates the starting point or extent ('from X' or 'up to X').

लोकाः (lokāḥ) - the various planetary systems/realms (worlds, realms, people)

(noun)

Nominative, masculine, plural of loka

loka - world, realm, universe, people, space

From root lok (to see).

Root: lok (class 10)

Note: Subject of 'punarāvartinaḥ'.

पुनः (punaḥ) - again (referring to repeated return) (again, anew, but)

(indeclinable)

Note: Modifies 'āvartinaḥ'.

आवर्तिनः (āvartinaḥ) - destined to return (to the cycle of rebirth) (subject to return, revolving, turning back)

(adjective)

Nominative, masculine, plural of āvartin

āvartin - revolving, turning back, returning, cyclical, subject to return

From ā + vṛt + suffix in.

Prefix: ā

Root: vṛt (class 1)

Note: Qualifies 'lokāḥ'.

अर्जुन (arjuna) - O Arjuna (name of Pāṇḍava prince)

(proper noun)

Vocative, masculine, singular of arjuna

arjuna - Arjuna (a proper name), white, clear, shining

Note: Addressing Arjuna.

माम् (mām) - referring to Lord Krishna/the Supreme Being (Me, to Me)

(pronoun)

Accusative, singular of aham

aham - I, Me

Note: Object of 'upetya'.

उपेत्य (upetya) - having reached Me (Lord Krishna) (having approached, having attained, having reached)

(indeclinable)

Absolutive (gerund)

Derived from root i (to go) with prefix upa and suffix lyaP.

Prefix: upa

Root: i (class 2)

Note: Acts as an adverbial clause, 'having done X'.

तु (tu) - introduces a contrast or emphasis (but, indeed, on the other hand)

(indeclinable)

Conjunction/particle.

कौन्तेय (kaunteya) - O Arjuna (Kuntī is another name for Pṛthā) (O son of Kuntī)

(proper noun)

Vocative, masculine, singular of kaunteya

kaunteya - son of Kuntī, Arjuna

Patronymic from Kuntī.

Note: Addressing Arjuna.

पुनः (punaḥ) - again (referring to rebirth) (again, anew, but)

(indeclinable)

Note: Modifies 'janma'.

जन्म (janma) - rebirth (punarjanma refers to cyclical existence) (birth, rebirth, origin, existence)

(noun)

Nominative, neuter, singular of janman

janman - birth, production, origin, existence, life

From root jan (to be born).

Root: jan (class 4)

Note: Subject of 'vidyate'.

न (na) - not, no

(indeclinable)

Negation particle.

Note: Negates the verb 'vidyate'.

विद्यते (vidyate) - does not exist (rebirth) (exists, is found, is present)

(verb)

3rd person , singular, middle, present (laṭ) of vid

From root vid, used in 4th class Atmanepada meaning "to exist".

Root: vid (class 4)