महाभारतः mahābhārataḥ - book-3, chapter-245, verse-13

सुखदुःखे हि पुरुषः पर्यायेणोपसेवते ।
नात्यन्तमसुखं कश्चित्प्राप्नोति पुरुषर्षभ ॥१३॥

13. sukhaduḥkhe hi puruṣaḥ paryāyeṇopasevate ,
nātyantamasukhaṁ kaścitprāpnoti puruṣarṣabha.

13. sukhaduḥkhe hi puruṣaḥ paryāyeṇa upasevate na
atyantam asukham kaścit prāpnoti puruṣarṣabha

13. Indeed, a person (puruṣa) experiences happiness and sorrow by turns. O best among men (puruṣa), no one ever attains unending unhappiness.

Words meanings summery:

• सुखदुःखे (sukhaduḥkhe) - happiness and sorrow

• हि (hi) - indeed (indeed, surely, for)

• पुरुषः (puruṣaḥ) - a person (a person, man, the cosmic person (puruṣa))

• पर्यायेण (paryāyeṇa) - by turns (by turns, alternately, in succession)

• उपसेवते (upasevate) - experiences (he/she/it experiences, serves, attends, enjoys)

• न (na) - not (not, no)

• अत्यन्तम् (atyantam) - always (extremely, always, perpetually)

• असुखम् (asukham) - unhappiness (unhappiness, sorrow, not happy)

• कश्चित् (kaścit) - anyone (anyone, someone)

• प्राप्नोति (prāpnoti) - attains (he/she/it attains, obtains)

• पुरुषर्षभ (puruṣarṣabha) - O best among men (puruṣa) (referring to Yudhishthira) (O best among men)

Words meanings and morphology

सुखदुःखे (sukhaduḥkhe) - happiness and sorrow

(noun)

Accusative, neuter, dual of sukhaduḥkha

sukhaduḥkha - happiness and sorrow

Compound type : dvandva (sukha+duḥkha)

• sukha – happiness, joy
  noun (neuter)
• duḥkha – sorrow, suffering
  noun (neuter)

Note: Object of 'upasevate'.

हि (hi) - indeed (indeed, surely, for)

(indeclinable)

Note: Emphatic particle.

पुरुषः (puruṣaḥ) - a person (a person, man, the cosmic person (puruṣa))

(noun)

Nominative, masculine, singular of puruṣa

puruṣa - man, human being, person, male, the supreme cosmic person

Note: Subject of 'upasevate'.

पर्यायेण (paryāyeṇa) - by turns (by turns, alternately, in succession)

(noun)

Instrumental, masculine, singular of paryāya

paryāya - turn, succession, course, alternate

Prefixes: pari+ā

Root: i (class 2)

Note: Adverbial usage.

उपसेवते (upasevate) - experiences (he/she/it experiences, serves, attends, enjoys)

(verb)

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

Prefix: upa

Root: sev (class 1)

Note: Root 'sev' is atmāne-pada.

न (na) - not (not, no)

(indeclinable)

Note: Negation.

अत्यन्तम् (atyantam) - always (extremely, always, perpetually)

(indeclinable)

Compound type : avyayībhāva (ati+anta)

• ati – excessive, beyond
  indeclinable
• anta – end, limit
  noun (masculine)

Note: Adverb.

असुखम् (asukham) - unhappiness (unhappiness, sorrow, not happy)

(noun)

Accusative, neuter, singular of asukha

asukha - unhappiness, sorrow, not happy

Compound type : tatpurusha (a+sukha)

• a – not, un-
  indeclinable
  Negative prefix
• sukha – happiness, joy
  noun (neuter)

Note: Object of 'prāpnoti'.

कश्चित् (kaścit) - anyone (anyone, someone)

(pronoun)

Nominative, masculine, singular of kaścit

kaścit - someone, anyone, a certain person

Note: Subject of 'prāpnoti'.

प्राप्नोति (prāpnoti) - attains (he/she/it attains, obtains)

(verb)

3rd person , singular, active, present (laṭ) of prāp

Prefix: pra

Root: āp (class 5)

पुरुषर्षभ (puruṣarṣabha) - O best among men (puruṣa) (referring to Yudhishthira) (O best among men)

(noun)

Vocative, masculine, singular of puruṣarṣabha

puruṣarṣabha - best of men, bull among men

Compound type : tatpurusha (puruṣa+ṛṣabha)

• puruṣa – man, human being, person, male, the supreme cosmic person
  noun (masculine)
• ṛṣabha – bull, best, chief
  noun (masculine)

Note: Epithet for Yudhishthira.