महाभारतः mahābhārataḥ - book-5, chapter-160, verse-6

यस्त्वं वृद्धं सर्वराज्ञां हितबुद्धिं जितेन्द्रियम् ।
मरणाय महाबुद्धिं दीक्षयित्वा विकत्थसे ॥६॥

6. yastvaṁ vṛddhaṁ sarvarājñāṁ hitabuddhiṁ jitendriyam ,
maraṇāya mahābuddhiṁ dīkṣayitvā vikatthase.

6. yaḥ tvam vṛddham sarvarājñām hitabuddhim jitendriyam
maraṇāya mahābuddhim dīkṣayitvā vikatthase

6. tvam yaḥ sarvarājñām vṛddham hitabuddhim jitendriyam
mahābuddhim maraṇāya dīkṣayitvā vikatthase

6. You, who, having consecrated for death the venerable, well-wishing, self-controlled (jitendriyam), and highly intelligent Bhishma, the senior among all kings, then boast (vikatthase).

Words meanings summery:

• यः (yaḥ) - who, which

• त्वम् (tvam) - you

• वृद्धम् (vṛddham) - venerable (referring to Bhishma) (old, venerable, grown)

• सर्वराज्ञाम् (sarvarājñām) - among all kings (of all kings)

• हितबुद्धिम् (hitabuddhim) - well-wishing (referring to Bhishma) (well-wishing, having good intentions)

• जितेन्द्रियम् (jitendriyam) - self-controlled (referring to Bhishma) (one who has controlled his senses, self-controlled (jitendriyam))

• मरणाय (maraṇāya) - for death, for dying

• महाबुद्धिम् (mahābuddhim) - highly intelligent (referring to Bhishma) (great-minded, highly intelligent)

• दीक्षयित्वा (dīkṣayitvā) - having caused to be dedicated to (or prepared for) death (having consecrated, having initiated)

• विकत्थसे (vikatthase) - you boast, you praise yourself

Words meanings and morphology

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

Note: Relative pronoun referring to 'you'.

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (plural or singular, as in English)

वृद्धम् (vṛddham) - venerable (referring to Bhishma) (old, venerable, grown)

(adjective)

Accusative, masculine, singular of vṛddha

vṛddha - old, aged, venerable, grown

Past Passive Participle

from root vṛdh (to grow, increase) + kta

Root: vṛdh (class 1)

Note: Refers to Bhishma.

सर्वराज्ञाम् (sarvarājñām) - among all kings (of all kings)

(compound)

Compound type : tatpurusha (sarva+rājan)

• sarva – all, every, whole
  adjective (masculine)
• rājan – king, ruler
  noun (masculine)

Note: Declined form of 'rājan' in a compound.

हितबुद्धिम् (hitabuddhim) - well-wishing (referring to Bhishma) (well-wishing, having good intentions)

(adjective)

Accusative, masculine, singular of hitabuddhi

hitabuddhi - well-intentioned, benevolent, having good thoughts

Compound type : bahuvrihi (hita+buddhi)

• hita – beneficial, good, welfare, well-disposed
  adjective (masculine)
  Past Passive Participle
  from root dhā (to place) with prefix hi (which is an older form of hita)
  Root: dhā (class 3)
• buddhi – intellect, understanding, intention, mind
  noun (feminine)
  Root: budh (class 1)

Note: Refers to Bhishma.

जितेन्द्रियम् (jitendriyam) - self-controlled (referring to Bhishma) (one who has controlled his senses, self-controlled (jitendriyam))

(adjective)

Accusative, masculine, singular of jitendriya

jitendriya - one who has conquered the senses, self-controlled

Compound type : bahuvrihi (jita+indriya)

• jita – conquered, subdued, won
  adjective (masculine)
  Past Passive Participle
  from root ji (to conquer) + kta
  Root: ji (class 1)
• indriya – sense, organ of sense
  noun (neuter)

Note: Refers to Bhishma.

मरणाय (maraṇāya) - for death, for dying

(noun)

Dative, neuter, singular of maraṇa

maraṇa - death, dying

from root mṛ (to die) + lyuṭ suffix

Root: mṛ (class 6)

महाबुद्धिम् (mahābuddhim) - highly intelligent (referring to Bhishma) (great-minded, highly intelligent)

(adjective)

Accusative, masculine, singular of mahābuddhi

mahābuddhi - great intellect, sagacious, intelligent

Compound type : bahuvrihi (mahat+buddhi)

• mahat – great, large, vast
  adjective (neuter)
• buddhi – intellect, understanding, intention, mind
  noun (feminine)
  Root: budh (class 1)

Note: Refers to Bhishma.

दीक्षयित्वा (dīkṣayitvā) - having caused to be dedicated to (or prepared for) death (having consecrated, having initiated)

(verb)

absolutive of dīkṣay

Absolutive (Gerund)

causative stem of root dīkṣ (to consecrate) + ktvā suffix

Root: dīkṣ (class 1)

Note: Implies having caused someone to be dedicated to (or prepared for) death. The context refers to Bhishma's vow or 'initiation' into battle which would lead to his death.

विकत्थसे (vikatthase) - you boast, you praise yourself

(verb)

2nd person , singular, middle, present (laṭ) of vikatth

root katth (to praise oneself, boast) with prefix vi, middle voice ending se (2nd singular)

Prefix: vi

Root: katth (class 1)