महाभारतः mahābhārataḥ - book-12, chapter-104, verse-43

तथैव चान्यै रतिशास्त्रवेदिभिः स्वलंकृतैः शास्त्रविधानदृष्टिभिः ।
सुशिक्षितैर्भाष्यकथाविशारदैः परेषु कृत्यानुपधारयस्व ॥४३॥

43. tathaiva cānyai ratiśāstravedibhiḥ; svalaṁkṛtaiḥ śāstravidhānadṛṣṭibhiḥ ,
suśikṣitairbhāṣyakathāviśāradaiḥ; pareṣu kṛtyānupadhārayasva.

43. tathā eva ca anyaiḥ ratiśāstravedibhiḥ
svalamkṛtaiḥ śāstravidhānadṛṣṭibhiḥ
susikṣitaiḥ bhāṣyakathāviśāradaiḥ
pareṣu kṛtyān upadhārayasva

43. tvam tathā eva ca anyaiḥ ratiśāstravedibhiḥ
svalamkṛtaiḥ śāstravidhānadṛṣṭibhiḥ
susikṣitaiḥ bhāṣyakathāviśāradaiḥ
pareṣu kṛtyān upadhārayasva

43. And similarly, you should ascertain the actions of your adversaries (pareṣu) with the help of others who are knowledgeable in the science of human relations, well-equipped, whose perspective is guided by scriptural principles, well-trained, and proficient in commentaries and narratives.

Words meanings summery:

• तथा (tathā) - thus, so, in that manner

• एव (eva) - even, indeed, just, only

• च (ca) - and, also

• अन्यैः (anyaiḥ) - by others

• रतिशास्त्रवेदिभिः (ratiśāstravedibhiḥ) - by those who know the science of love/human relations

• स्वलम्कृतैः (svalamkṛtaiḥ) - by those well-adorned, well-equipped, properly qualified

• शास्त्रविधानदृष्टिभिः (śāstravidhānadṛṣṭibhiḥ) - by those whose insight is based on scriptural rules

• सुसिक्षितैः (susikṣitaiḥ) - by those well-taught, well-trained

• भाष्यकथाविशारदैः (bhāṣyakathāviśāradaiḥ) - by those skilled in commentaries and narrations

• परेषु (pareṣu) - in/among others, concerning enemies/adversaries

• कृत्यान् (kṛtyān) - actions, deeds, schemes, things to be done

• उपधारयस्व (upadhārayasva) - you should ascertain, observe, understand

Words meanings and morphology

तथा (tathā) - thus, so, in that manner

(indeclinable)

एव (eva) - even, indeed, just, only

(indeclinable)

च (ca) - and, also

(indeclinable)

अन्यैः (anyaiḥ) - by others

(pronoun)

Instrumental, masculine/neuter, plural of anya

anya - other, another

रतिशास्त्रवेदिभिः (ratiśāstravedibhiḥ) - by those who know the science of love/human relations

(noun)

Instrumental, masculine, plural of ratiśāstravedin

ratiśāstravedin - knower of the science of love/human relations

Compound type : Tatpuruṣa (ratiśāstra+vedin)

• ratiśāstra – science of love, erotics, treatise on human relations
  noun (neuter)
• vedin – knower, expert, one who understands
  noun (masculine)
  Root: vid (class 2)

स्वलम्कृतैः (svalamkṛtaiḥ) - by those well-adorned, well-equipped, properly qualified

(adjective)

Instrumental, masculine/neuter, plural of svalaṃkṛta

svalaṁkṛta - well-adorned, well-equipped, properly qualified

Past Passive Participle

Derived from root 'kṛ' (to do, make) with prefixes 'su' and 'alam'.

Prefixes: su+alam

Root: kṛ (class 8)

शास्त्रविधानदृष्टिभिः (śāstravidhānadṛṣṭibhiḥ) - by those whose insight is based on scriptural rules

(noun)

Instrumental, masculine, plural of śāstravidhānadṛṣṭi

śāstravidhānadṛṣṭi - insight/view based on scriptural ordinances

Compound type : Bahuvrīhi (śāstra+vidhāna+dṛṣṭi)

• śāstra – scripture, treatise, scientific or sacred text
  noun (neuter)
• vidhāna – rule, ordinance, injunction, method
  noun (neuter)
  Prefix: vi
  Root: dhā (class 3)
• dṛṣṭi – sight, vision, insight, view
  noun (feminine)
  Root: dṛś (class 1)

Note: Used adjectivally to describe persons.

सुसिक्षितैः (susikṣitaiḥ) - by those well-taught, well-trained

(adjective)

Instrumental, masculine/neuter, plural of susikṣita

susikṣita - well-trained, well-taught, highly educated

Past Passive Participle

Derived from root 'śikṣ' (to learn) with prefix 'su'.

Prefix: su

Root: śikṣ (class 1)

भाष्यकथाविशारदैः (bhāṣyakathāviśāradaiḥ) - by those skilled in commentaries and narrations

(noun)

Instrumental, masculine, plural of bhāṣyakathāviśārada

bhāṣyakathāviśārada - skilled in commentaries and narratives/discourses

Compound type : Tatpuruṣa (bhāṣya+kathā+viśārada)

• bhāṣya – commentary, explanation
  noun (neuter)
  Root: bhāṣ (class 1)
• kathā – story, tale, narration, discourse
  noun (feminine)
  Root: kath (class 10)
• viśārada – skilled, proficient, expert, clever
  adjective (masculine)

Note: Used adjectivally to describe persons.

परेषु (pareṣu) - in/among others, concerning enemies/adversaries

(pronoun)

Locative, masculine/neuter, plural of para

para - other, another, enemy, adversary

कृत्यान् (kṛtyān) - actions, deeds, schemes, things to be done

(noun)

Accusative, masculine, plural of kṛtya

kṛtya - action, deed, thing to be done, business; spy, agent

Gerundive

Derived from root 'kṛ' (to do, make). Can be used as a noun meaning 'actions' or 'agents'.

Root: kṛ (class 8)

Note: Here appears to be masculine accusative plural, possibly referring to 'agents' or 'acts' of enemies.

उपधारयस्व (upadhārayasva) - you should ascertain, observe, understand

(verb)

2nd person , singular, middle, imperative (loṭ) of upadhāraya

Imperative, 2nd person singular (Causative Middle)

Imperative (Loṭ) form of the causative of root 'dhṛ' (to hold, bear) with prefix 'upa', in middle voice.

Prefix: upa

Root: dhṛ (class 1)