महाभारतः mahābhārataḥ - book-12, chapter-226, verse-17

रन्तिदेवश्च सांकृत्यो वसिष्ठाय महात्मने ।
अपः प्रदाय शीतोष्णा नाकपृष्ठे महीयते ॥१७॥

17. rantidevaśca sāṁkṛtyo vasiṣṭhāya mahātmane ,
apaḥ pradāya śītoṣṇā nākapṛṣṭhe mahīyate.

17. rantidevaḥ ca sāṃkṛtyaḥ vasiṣṭhāya mahātmane
apaḥ pradāya śītoṣṇāḥ nākapṛṣṭhe mahīyate

17. ca sāṃkṛtyaḥ rantidevaḥ mahātmane vasiṣṭhāya
śītoṣṇāḥ apaḥ pradāya nākapṛṣṭhe mahīyate

17. And Rantideva, a descendant of Saṃkṛti, after offering both cold and hot water to the great-souled Vasiṣṭha, is glorified in the celestial abode.

Words meanings summery:

• रन्तिदेवः (rantidevaḥ) - Name of a legendary king known for his generosity. (Rantideva)

• च (ca) - and

• सांकृत्यः (sāṁkṛtyaḥ) - descendant of Saṃkṛti

• वसिष्ठाय (vasiṣṭhāya) - The sage Vasiṣṭha. (to Vasiṣṭha)

• महात्मने (mahātmane) - to the great-souled, to the noble

• अपः (apaḥ) - waters

• प्रदाय (pradāya) - having offered, having given

• शीतोष्णाः (śītoṣṇāḥ) - Referring to water that is both cold and hot, or offerings of both types of water. (cold and hot)

• नाकपृष्ठे (nākapṛṣṭhe) - in the celestial abode, in the highest heaven

• महीयते (mahīyate) - is glorified, is honored, is exalted

Words meanings and morphology

रन्तिदेवः (rantidevaḥ) - Name of a legendary king known for his generosity. (Rantideva)

(proper noun)

Nominative, masculine, singular of rantideva

rantideva - Rantideva (name of a king)

च (ca) - and

(indeclinable)

सांकृत्यः (sāṁkṛtyaḥ) - descendant of Saṃkṛti

(proper noun)

Nominative, masculine, singular of sāṃkṛtya

sāṁkṛtya - descendant of Saṃkṛti (a sage)

Derived from Saṃkṛti with an aṇ suffix

वसिष्ठाय (vasiṣṭhāya) - The sage Vasiṣṭha. (to Vasiṣṭha)

(proper noun)

Dative, masculine, singular of vasiṣṭha

vasiṣṭha - Vasiṣṭha (name of a celebrated Vedic sage)

महात्मने (mahātmane) - to the great-souled, to the noble

(adjective)

Dative, masculine, singular of mahātman

mahātman - great-souled, noble, magnanimous

Compound type : Bahuvrīhi (mahā+ātman)

• mahā – great, mighty
  adjective
• ātman – self, soul, spirit, essential nature
  noun (masculine)

अपः (apaḥ) - waters

(noun)

Accusative, feminine, plural of ap

ap - water

प्रदाय (pradāya) - having offered, having given

(indeclinable)

Absolutive

From pra-√dā (to give, offer) + ya suffix

Prefix: pra

Root: dā (class 3)

शीतोष्णाः (śītoṣṇāḥ) - Referring to water that is both cold and hot, or offerings of both types of water. (cold and hot)

(adjective)

Accusative, feminine, plural of śītoṣṇa

śītoṣṇa - cold and hot, lukewarm

Compound type : Dvandva (śīta+uṣṇa)

• śīta – cold, cool
  adjective (neuter)
• uṣṇa – hot, warm
  adjective (neuter)

Note: Agrees with apaḥ (waters), which is feminine plural.

नाकपृष्ठे (nākapṛṣṭhe) - in the celestial abode, in the highest heaven

(noun)

Locative, neuter, singular of nākapṛṣṭha

nākapṛṣṭha - surface of heaven, celestial region

Compound type : Tatpurusha (nāka+pṛṣṭha)

• nāka – heaven, sky
  noun (neuter)
• pṛṣṭha – back, surface, top
  noun (neuter)

महीयते (mahīyate) - is glorified, is honored, is exalted

(verb)

3rd person , singular, middle, present (lat) of mah

Denominative verb from mahat (great)

Root: mah (class 1)