महाभारतः mahābhārataḥ - book-15, chapter-9, verse-15

चारयेथाश्च सततं चारैरविदितैः परान् ।
परीक्षितैर्बहुविधं स्वराष्ट्रेषु परेषु च ॥१५॥

15. cārayethāśca satataṁ cārairaviditaiḥ parān ,
parīkṣitairbahuvidhaṁ svarāṣṭreṣu pareṣu ca.

15. cārayethāḥ ca satatam cāraiḥ aviditaiḥ parān
parīkṣitaiḥ bahuvidham svarāṣṭreṣu pareṣu ca

15. ca satatam aviditaiḥ bahuvidham parīkṣitaiḥ cāraiḥ parān (tvaṃ) cārayethāḥ,
svarāṣṭreṣu pareṣu ca.

15. And you should constantly employ unknown spies, thoroughly tested in many ways, to gather intelligence on your adversaries both within your own kingdom and in enemy territories.

Words meanings summery:

• चारयेथाः (cārayethāḥ) - you should employ (spies) (you should cause to move, you should employ (spies))

• च (ca) - and (and, also)

• सततम् (satatam) - constantly, perpetually, always

• चारैः (cāraiḥ) - by spies, by messengers

• अविदितैः (aviditaiḥ) - by unknown, unperceived ones

• परान् (parān) - adversaries (others, enemies, adversaries)

• परीक्षितैः (parīkṣitaiḥ) - by those who are thoroughly examined, by tested (spies)

• बहुविधम् (bahuvidham) - in many ways, manifoldly, variously

• स्वराष्ट्रेषु (svarāṣṭreṣu) - in your own kingdom (in one's own kingdom/territories)

• परेषु (pareṣu) - in enemy territories (in others', in enemy territories)

• च (ca) - and (and, also)

Words meanings and morphology

चारयेथाः (cārayethāḥ) - you should employ (spies) (you should cause to move, you should employ (spies))

(verb)

2nd person , singular, middle, optative (vidhi-liṅ) of car

Optative Mood (Causative), Middle Voice

From causative stem of root car (to move, wander)

Root: car (class 1)

च (ca) - and (and, also)

(indeclinable)

सततम् (satatam) - constantly, perpetually, always

(indeclinable)

Note: Adverbial form.

चारैः (cāraiḥ) - by spies, by messengers

(noun)

Instrumental, masculine, plural of cāra

cāra - spy, messenger, agent

From root car (to move, wander)

Root: car (class 1)

अविदितैः (aviditaiḥ) - by unknown, unperceived ones

(adjective)

Instrumental, masculine, plural of avidita

avidita - unknown, unperceived, unnoticed

Negative Past Passive Participle

Negative particle a- + PPP of √vid (to know)

Compound type : nañ-tatpuruṣa (a+vidita)

• a – not, un-
  indeclinable
• vidita – known, perceived
  adjective (masculine)
  Past Passive Participle
  From root vid (to know)
  Root: vid (class 2)

Note: Qualifies "cāraiḥ".

परान् (parān) - adversaries (others, enemies, adversaries)

(pronoun)

Accusative, masculine, plural of para

para - other, another, enemy, supreme

Note: Object of 'cārayethāḥ' (indirectly).

परीक्षितैः (parīkṣitaiḥ) - by those who are thoroughly examined, by tested (spies)

(adjective)

Instrumental, masculine, plural of parīkṣita

parīkṣita - tested, examined, proven

Past Passive Participle

From prefix pari- + root īkṣ (to see, examine)

Prefix: pari

Root: īkṣ (class 1)

Note: Qualifies "cāraiḥ".

बहुविधम् (bahuvidham) - in many ways, manifoldly, variously

(indeclinable)

Compound of bahu (many) and vidha (kind).

Compound type : bahuvrīhi (bahu+vidha)

• bahu – many, much
  adjective
• vidha – kind, sort, manner
  noun (masculine)
  From root dhā (to place)
  Root: dhā (class 3)

Note: Adverbial.

स्वराष्ट्रेषु (svarāṣṭreṣu) - in your own kingdom (in one's own kingdom/territories)

(noun)

Locative, neuter, plural of svarāṣṭra

svarāṣṭra - one's own kingdom, native country

Compound of sva (own) and rāṣṭra (kingdom).

Compound type : ṣaṣṭhī-tatpuruṣa (sva+rāṣṭra)

• sva – one's own
  pronoun (neuter)
• rāṣṭra – kingdom, territory, nation
  noun (neuter)

परेषु (pareṣu) - in enemy territories (in others', in enemy territories)

(pronoun)

Locative, neuter, plural of para

para - other, distant, enemy

च (ca) - and (and, also)

(indeclinable)