महाभारतः mahābhārataḥ - book-5, chapter-35, verse-61

गुरुरात्मवतां शास्ता शास्ता राजा दुरात्मनाम् ।
अथ प्रच्छन्नपापानां शास्ता वैवस्वतो यमः ॥६१॥

61. gururātmavatāṁ śāstā śāstā rājā durātmanām ,
atha pracchannapāpānāṁ śāstā vaivasvato yamaḥ.

61. guruḥ ātmavatām śāstā śāstā rājā durātmanām
atha pracchannapāpānām śāstā vaivasvataḥ yamaḥ

61. The preceptor (guru) is the disciplinarian for the self-controlled (ātman). The king is the punisher for the wicked. Moreover, for those with hidden sins, Vaivasvata Yama (Yama) is the punisher.

Words meanings summery:

• गुरुः (guruḥ) - preceptor (guru) (preceptor, teacher, spiritual guide)

• आत्मवताम् (ātmavatām) - of those who possess self-control (ātman) (of those who possess self-control, of the self-possessed)

• शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

• शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

• राजा (rājā) - king, ruler

• दुरात्मनाम् (durātmanām) - of the wicked, of the evil-minded, of those with bad disposition

• अथ (atha) - moreover (now, then, moreover, further)

• प्रच्छन्नपापानाम् (pracchannapāpānām) - of those whose sins are hidden

• शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

• वैवस्वतः (vaivasvataḥ) - son of Vivasvat (the Sun god) (son of Vivasvat, name of Yama)

• यमः (yamaḥ) - Yama (Yama) (Yama, god of death and justice)

Words meanings and morphology

गुरुः (guruḥ) - preceptor (guru) (preceptor, teacher, spiritual guide)

(noun)

Nominative, masculine, singular of guru

guru - teacher, spiritual preceptor, venerable, heavy

आत्मवताम् (ātmavatām) - of those who possess self-control (ātman) (of those who possess self-control, of the self-possessed)

(adjective)

Genitive, masculine, plural of ātmavat

ātmavat - possessing self, self-possessed, endowed with self-control, spiritual

possessive suffix -vat

Compound type : tatpurusha (ātman)

• ātman – self, soul, spirit, essential nature
  noun (masculine)
  Root: an (class 2)

शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

(noun)

Nominative, masculine, singular of śāstṛ

śāstṛ - instructor, teacher, ruler, punisher, disciplinarian

agent noun

Derived from root śās (to command, rule, punish)

Root: śās (class 2)

शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

(noun)

Nominative, masculine, singular of śāstṛ

śāstṛ - instructor, teacher, ruler, punisher, disciplinarian

agent noun

Derived from root śās (to command, rule, punish)

Root: śās (class 2)

राजा (rājā) - king, ruler

(noun)

Nominative, masculine, singular of rājan

rājan - king, ruler, sovereign

दुरात्मनाम् (durātmanām) - of the wicked, of the evil-minded, of those with bad disposition

(adjective)

Genitive, masculine, plural of durātman

durātman - evil-minded, wicked, malicious, depraved

Compound type : bahuvrihi (dus+ātman)

• dus – bad, evil, difficult (prefix)
  indeclinable
• ātman – self, soul, mind, nature
  noun (masculine)
  Root: an (class 2)

अथ (atha) - moreover (now, then, moreover, further)

(indeclinable)

प्रच्छन्नपापानाम् (pracchannapāpānām) - of those whose sins are hidden

(adjective)

Genitive, masculine, plural of pracchannapāpa

pracchannapāpa - one whose sins are hidden/concealed

Compound type : bahuvrihi (pracchanna+pāpa)

• pracchanna – hidden, concealed, secret
  participle (masculine)
  Past Passive Participle
  Derived from root chad (to cover) with prefix pra
  Prefix: pra
  Root: chad (class 1)
• pāpa – sin, evil, wickedness
  noun (neuter)

शास्ता (śāstā) - disciplinarian, punisher, ruler, instructor

(noun)

Nominative, masculine, singular of śāstṛ

śāstṛ - instructor, teacher, ruler, punisher, disciplinarian

agent noun

Derived from root śās (to command, rule, punish)

Root: śās (class 2)

वैवस्वतः (vaivasvataḥ) - son of Vivasvat (the Sun god) (son of Vivasvat, name of Yama)

(proper noun)

Nominative, masculine, singular of vaivasvata

vaivasvata - son of Vivasvat (Sun god), an epithet of Yama

Note: An epithet for Yama.

यमः (yamaḥ) - Yama (Yama) (Yama, god of death and justice)

(proper noun)

Nominative, masculine, singular of yama

yama - restraint, discipline, god of death, judge of the dead

Root: yam (class 1)