महाभारतः mahābhārataḥ - book-13, chapter-18, verse-17

रथन्तरं द्विजश्रेष्ठ न सम्यगिति वर्तते ।
समीक्षस्व पुनर्बुद्ध्या हर्षं त्यक्त्वा द्विजोत्तम ।
अयज्ञवाहिनं पापमकार्षीस्त्वं सुदुर्मते ॥१७॥

17. rathantaraṁ dvijaśreṣṭha na samyagiti vartate ,
samīkṣasva punarbuddhyā harṣaṁ tyaktvā dvijottama ,
ayajñavāhinaṁ pāpamakārṣīstvaṁ sudurmate.

17. rathantaram dvijaśreṣṭha na samyak
iti vartate samīkṣasva punar buddhyā
harṣam tyaktvā dvijottama ayajñavāhinam
pāpam akārṣīḥ tvam sudurmate

17. O best among Brahmins (dvijottama), this Rathantara (Sāman) chant is not being performed correctly. Examine it again with your intelligence, abandoning your excitement. O very evil-minded one, you have committed a sin that disqualifies the Vedic ritual (yajña).

Words meanings summery:

• रथन्तरम् (rathantaram) - Rathantara (name of a prominent Sāman chant)

• द्विजश्रेष्ठ (dvijaśreṣṭha) - O best among Brahmins (O best among the twice-born)

• न (na) - not, no

• सम्यक् (samyak) - properly, correctly, fully

• इति (iti) - introducing direct speech or marking a quotation (thus, so)

• वर्तते (vartate) - it proceeds, it is, it exists, it is being performed

• समीक्षस्व (samīkṣasva) - examine, observe, consider carefully

• पुनर् (punar) - again, moreover

• बुद्ध्या (buddhyā) - with intelligence, by understanding

• हर्षम् (harṣam) - joy, excitement, delight

• त्यक्त्वा (tyaktvā) - having abandoned, having given up

• द्विजोत्तम (dvijottama) - O best among Brahmins (O best among the twice-born)

• अयज्ञवाहिनम् (ayajñavāhinam) - that which causes the Vedic ritual (yajña) to be ineffective or invalid (not carrying the Vedic ritual (yajña) properly, disqualifying the ritual)

• पापम् (pāpam) - sin, evil deed

• अकार्षीः (akārṣīḥ) - you have done, you have performed

• त्वम् (tvam) - you

• सुदुर्मते (sudurmate) - O very evil-minded one, O foolish one

Words meanings and morphology

रथन्तरम् (rathantaram) - Rathantara (name of a prominent Sāman chant)

(proper noun)

Nominative, neuter, singular of rathantara

rathantara - a particular Sāman chant, one of the most important Sāmans

Note: Can also be accusative singular

द्विजश्रेष्ठ (dvijaśreṣṭha) - O best among Brahmins (O best among the twice-born)

(noun)

Vocative, masculine, singular of dvijaśreṣṭha

dvijaśreṣṭha - best among the twice-born (i.e., Brahmins)

Compound type : tatpuruṣa (dvija+śreṣṭha)

• dvija – twice-born (Brahmin, Kṣatriya, Vaiśya, or bird, tooth)
  noun (masculine)
• śreṣṭha – best, most excellent, chief
  adjective (masculine)

न (na) - not, no

(indeclinable)

सम्यक् (samyak) - properly, correctly, fully

(indeclinable)

इति (iti) - introducing direct speech or marking a quotation (thus, so)

(indeclinable)

वर्तते (vartate) - it proceeds, it is, it exists, it is being performed

(verb)

3rd person , singular, middle, present (laṭ) of √vṛt

present 3rd singular middle

Root: vṛt (class 1)

समीक्षस्व (samīkṣasva) - examine, observe, consider carefully

(verb)

2nd person , singular, middle, imperative (loṭ) of √īkṣ

imperative 2nd singular middle

Prefix: sam

Root: īkṣ (class 1)

पुनर् (punar) - again, moreover

(indeclinable)

बुद्ध्या (buddhyā) - with intelligence, by understanding

(noun)

Instrumental, feminine, singular of buddhi

buddhi - intellect, understanding, discernment, perception

Root: budh (class 1)

हर्षम् (harṣam) - joy, excitement, delight

(noun)

Accusative, masculine, singular of harṣa

harṣa - joy, delight, pleasure, excitement, thrill

Root: hṛṣ (class 1)

त्यक्त्वा (tyaktvā) - having abandoned, having given up

(indeclinable)

absolutive

Root: tyaj (class 1)

द्विजोत्तम (dvijottama) - O best among Brahmins (O best among the twice-born)

(noun)

Vocative, masculine, singular of dvijottama

dvijottama - best among the twice-born (Brahmins)

Compound type : tatpuruṣa (dvija+uttama)

• dvija – twice-born (Brahmin, Kṣatriya, Vaiśya, or bird, tooth)
  noun (masculine)
• uttama – best, highest, excellent
  adjective (masculine)

अयज्ञवाहिनम् (ayajñavāhinam) - that which causes the Vedic ritual (yajña) to be ineffective or invalid (not carrying the Vedic ritual (yajña) properly, disqualifying the ritual)

(adjective)

Accusative, masculine, singular of ayajñavāhin

ayajñavāhin - not leading to a Vedic ritual (yajña), not bearing the fruit of a ritual, making a ritual useless

Compound type : nañ-bahuvrihi (a+yajña+vāhin)

• a – not, un-
  indeclinable
• yajña – Vedic ritual, sacrifice, offering
  noun (masculine)
  Root: yaj (class 1)
• vāhin – carrying, bearing, conveying
  adjective (masculine)
  From √vah (to carry)
  Root: vah (class 1)

पापम् (pāpam) - sin, evil deed

(noun)

Accusative, neuter, singular of pāpa

pāpa - evil, bad, wicked, sin, vice, evil deed

अकार्षीः (akārṣīḥ) - you have done, you have performed

(verb)

2nd person , singular, active, aorist (luṅ) of √kṛ

aorist 2nd singular active

Root: kṛ (class 8)

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (second person pronoun)

सुदुर्मते (sudurmate) - O very evil-minded one, O foolish one

(noun)

Vocative, masculine, singular of sudurmati

sudurmati - very evil-minded, very foolish, having a very bad intellect

Compound type : bahuvrihi (su+dur+mati)

• su – good, well, very
  indeclinable
• dur – bad, difficult, ill
  indeclinable
• mati – mind, intelligence, thought, understanding
  noun (feminine)
  Root: man (class 4)