महाभारतः mahābhārataḥ - book-13, chapter-91, verse-16

तत्कृत्वा स मुनिश्रेष्ठो धर्मसंकरमात्मनः ।
पश्चात्तापेन महता तप्यमानोऽभ्यचिन्तयत् ॥१६॥

16. tatkṛtvā sa muniśreṣṭho dharmasaṁkaramātmanaḥ ,
paścāttāpena mahatā tapyamāno'bhyacintayat.

16. tat kṛtvā sa muniśreṣṭhaḥ dharmasaṃkaram ātmanaḥ
paścāttāpena mahatā tapyamānaḥ abhyacintayat

16. tat kṛtvā sa muniśreṣṭhaḥ ātmanaḥ dharmasaṃkaram
mahatā paścāttāpena tapyamānaḥ abhyacintayat

16. Having done that, that best of sages (muniśreṣṭha), greatly tormented by remorse over the confusion of his own natural law (dharma), began to ponder.

Words meanings summery:

• तत् (tat) - that (act/deed) (that, therefore, then)

• कृत्वा (kṛtvā) - having done (that act) (having done, having made)

• स (sa) - he (the best of sages) (he, that)

• मुनिश्रेष्ठः (muniśreṣṭhaḥ) - that particular sage who committed the act (best of sages, foremost sage)

• धर्मसंकरम् (dharmasaṁkaram) - the confusion or violation of his own natural law/duty (confusion of dharma, mixing of dharma, transgression of dharma)

• आत्मनः (ātmanaḥ) - pertaining to his own (dharma/self) (of the self, of oneself, his own)

• पश्चात्तापेन (paścāttāpena) - as the cause of his pondering (by repentance, by remorse, by regret)

• महता (mahatā) - by great (remorse) (great, large, mighty)

• तप्यमानः (tapyamānaḥ) - he (the sage) being greatly tormented (being tormented, suffering, afflicted)

• अभ्यचिन्तयत् (abhyacintayat) - he pondered about his situation and what he had done (he thought, he pondered, he contemplated)

Words meanings and morphology

तत् (tat) - that (act/deed) (that, therefore, then)

(pronoun)

Accusative, neuter, singular of tad

tad - that, he, she, it

Note: Also nominative singular neuter. Here functions as an object.

कृत्वा (kṛtvā) - having done (that act) (having done, having made)

(indeclinable)

absolutive

Formed from root kṛ- (to do, make) with suffix -tvā

Root: kṛ (class 8)

Note: Gerund/absolutive

स (sa) - he (the best of sages) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Masculine nominative singular of 'tad'.

मुनिश्रेष्ठः (muniśreṣṭhaḥ) - that particular sage who committed the act (best of sages, foremost sage)

(noun)

Nominative, masculine, singular of muniśreṣṭha

muniśreṣṭha - best of sages, foremost sage

Compound type : tatpuruṣa (muni+śreṣṭha)

• muni – sage, ascetic
  noun (masculine)
• śreṣṭha – best, excellent, foremost
  adjective
  Superlative of praśasya/praśasta (excellent)

धर्मसंकरम् (dharmasaṁkaram) - the confusion or violation of his own natural law/duty (confusion of dharma, mixing of dharma, transgression of dharma)

(noun)

Accusative, masculine, singular of dharmasaṃkara

dharmasaṁkara - confusion of natural law/duty, mixing of (varnas') duties

Compound type : tatpuruṣa (dharma+saṃkara)

• dharma – natural law, constitution, duty, virtue, righteousness
  noun (masculine)
  From root dhṛ (to uphold, support)
  Root: dhṛ (class 1)
• saṃkara – mixture, confusion, transgression, hybrid
  noun (masculine)
  From prefix sam- + root kṛ- (to mix, make)
  Prefix: sam
  Root: kṛ (class 8)

Note: Object of repentance/thought.

आत्मनः (ātmanaḥ) - pertaining to his own (dharma/self) (of the self, of oneself, his own)

(noun)

Genitive, masculine, singular of ātman

ātman - self, soul, spirit, essential nature

Note: Connects with dharmasaṃkaram, indicating "his own" or "of himself".

पश्चात्तापेन (paścāttāpena) - as the cause of his pondering (by repentance, by remorse, by regret)

(noun)

Instrumental, masculine, singular of paścāttāpa

paścāttāpa - repentance, remorse, regret

Compound type : karmadhāraya (paścāt+tāpa)

• paścāt – after, behind, afterwards
  indeclinable
• tāpa – heat, pain, suffering, torment
  noun (masculine)
  From root tap (to heat, suffer)
  Root: tap (class 1)

महता (mahatā) - by great (remorse) (great, large, mighty)

(adjective)

Instrumental, masculine, singular of mahat

mahat - great, large, mighty

Note: Agrees with paścāttāpena.

तप्यमानः (tapyamānaḥ) - he (the sage) being greatly tormented (being tormented, suffering, afflicted)

(participle)

Nominative, masculine, singular of tapyamāna

tapyamāna - being tormented, suffering, afflicted

present middle participle

From root tap (to heat, suffer) in passive voice, with -māna suffix

Root: tap (class 4)

Note: Qualifies 'sa' (he).

अभ्यचिन्तयत् (abhyacintayat) - he pondered about his situation and what he had done (he thought, he pondered, he contemplated)

(verb)

3rd person , singular, active, imperfect (laṅ) of cint

imperfect

Root cint (10th class) with prefix abhi- + a-augment + laṅ-pratyaya (imperfect tense)

Prefix: abhi

Root: cit (class 10)