योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-81, verse-13

मिथः कदाचिज्जायेते कदाचित्सममेव च ।
पर्यायेण कदाचिच्च आधिव्याधी शरीरके ॥ १३ ॥

mithaḥ kadācijjāyete kadācitsamameva ca ,
paryāyeṇa kadācicca ādhivyādhī śarīrake 13

13. mithaḥ kadācit jāyete kadācit samam eva ca
paryāyeṇa kadācit ca ādhi-vyādhī śarīrake

13. ādhi-vyādhī mithaḥ kadācit,
kadācit samam eva ca,
kadācit paryāyeṇa ca śarīrake jāyete

13. Mental and physical ailments (ādhi-vyādhi) sometimes arise together, sometimes simultaneously, and sometimes alternately within the body.

Words meanings summery:

• मिथः (mithaḥ) - together (mutually, together, reciprocally)

• कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

• जायेते (jāyete) - they arise (they two are born, they two arise)

• कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

• समम् (samam) - simultaneously (equally, simultaneously, uniformly)

• एव (eva) - even (indeed, only, just, certainly)

• च (ca) - and (and, also)

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

• कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

• च (ca) - and (and, also)

• आधि-व्याधी (ādhi-vyādhī) - mental and physical ailments (ādhi-vyādhi) (mental anxieties and diseases)

• शरीरके (śarīrake) - within the body (in the body, on the body)

Words meanings and morphology

मिथः (mithaḥ) - together (mutually, together, reciprocally)

(indeclinable)

कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

(indeclinable)

जायेते (jāyete) - they arise (they two are born, they two arise)

(verb)

3rd person , dual, middle, present (laṭ) of jan

Present Middle, 3rd Person Dual

From root 'jan' (class 4), present tense, 3rd person dual middle voice. (jāyate, jāyete, jāyante)

Root: jan (class 4)

Note: Refers to the dual subject ādhi-vyādhī.

कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

(indeclinable)

समम् (samam) - simultaneously (equally, simultaneously, uniformly)

(adjective)

Accusative, neuter, singular of sama

sama - same, equal, similar, even, simultaneous

Note: Acts adverbially.

एव (eva) - even (indeed, only, just, certainly)

(indeclinable)

Note: Used for emphasis.

च (ca) - and (and, also)

(indeclinable)

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

(noun)

Instrumental, masculine, singular of paryāya

paryāya - turn, succession, alternation, method

Prefix: pari

Root: i (class 2)

Note: Used adverbially.

कदाचित् (kadācit) - sometimes (sometimes, at some time, perhaps)

(indeclinable)

च (ca) - and (and, also)

(indeclinable)

आधि-व्याधी (ādhi-vyādhī) - mental and physical ailments (ādhi-vyādhi) (mental anxieties and diseases)

(noun)

Nominative, masculine, dual of ādhi-vyādhi

ādhi-vyādhi - mental distress and physical disease (a dvandva compound)

Compound type : dvandva (ādhi+vyādhi)

• ādhi – mental pain, anxiety, worry
  noun (masculine)
  Prefix: ā
  Root: dhā (class 3)
• vyādhi – disease, sickness, ailment
  noun (masculine)
  Prefixes: vi+ā
  Root: dhā (class 3)

Note: This is a dual form referring to both ādhi and vyādhi.

शरीरके (śarīrake) - within the body (in the body, on the body)

(noun)

Locative, neuter, singular of śarīra

śarīra - body, corporeal frame

Note: The ending -e is for locative singular neuter.