महाभारतः mahābhārataḥ - book-12, chapter-52, verse-18

सत्त्वस्थं च मनो नित्यं तव भीष्म भविष्यति ।
रजस्तमोभ्यां रहितं घनैर्मुक्त इवोडुराट् ॥१८॥

18. sattvasthaṁ ca mano nityaṁ tava bhīṣma bhaviṣyati ,
rajastamobhyāṁ rahitaṁ ghanairmukta ivoḍurāṭ.

18. sattvastham ca manaḥ nityam tava bhīṣma bhaviṣyati
rajastamobhyām rahitam ghanaiḥ muktaḥ iva oḍurāṭ

18. bhīṣma tava manaḥ nityam sattvastham bhaviṣyati ca
rajastamobhyām rahitam ghanaiḥ muktaḥ iva oḍurāṭ

18. And your mind, O Bhishma, will perpetually remain established in the quality of goodness (sattva). It will be devoid of passion (rajas) and inertia (tamas), just like the moon when freed from clouds.

Words meanings summery:

• सत्त्वस्थम् (sattvastham) - established in sattva, abiding in goodness/purity

• च (ca) - and, also, moreover

• मनः (manaḥ) - mind, intellect, heart

• नित्यम् (nityam) - always, perpetually, eternally, constant

• तव (tava) - your, of you

• भीष्म (bhīṣma) - O Bhishma (Bhishma (proper noun))

• भविष्यति (bhaviṣyati) - will be, will become

• रजस्तमोभ्याम् (rajastamobhyām) - from/by passion and inertia

• रहितम् (rahitam) - free from, devoid of, deprived of

• घनैः (ghanaiḥ) - by clouds, from clouds

• मुक्तः (muktaḥ) - freed, liberated, released

• इव (iva) - like, as, just as

• ओडुराट् (oḍurāṭ) - king of stars, moon

Words meanings and morphology

सत्त्वस्थम् (sattvastham) - established in sattva, abiding in goodness/purity

(adjective)

Nominative, neuter, singular of sattvastha

sattvastha - established in goodness, abiding in purity, pure-minded

Compound of 'sattva' (goodness) and 'stha' (standing/abiding)

Compound type : tatpurusha (sattva+stha)

• sattva – goodness, purity, essence, reality, being
  noun (neuter)
• stha – standing, abiding, existing in
  adjective (masculine)
  Derived from root √sthā (to stand)
  Root: sthā (class 1)

Note: Agrees with 'manaḥ'.

च (ca) - and, also, moreover

(indeclinable)

मनः (manaḥ) - mind, intellect, heart

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, consciousness, heart, disposition

From root √man (to think)

Root: man (class 4)

नित्यम् (nityam) - always, perpetually, eternally, constant

(indeclinable)

Note: Functions adverbially as 'always'.

तव (tava) - your, of you

(pronoun)

Genitive, singular of yuṣmad

yuṣmad - you

भीष्म (bhīṣma) - O Bhishma (Bhishma (proper noun))

(proper noun)

Vocative, masculine, singular of bhīṣma

bhīṣma - Bhishma (a prominent character in the Mahabharata); formidable, terrible

भविष्यति (bhaviṣyati) - will be, will become

(verb)

3rd person , singular, active, future (lṛṭ) of bhū

Root: bhū (class 1)

रजस्तमोभ्याम् (rajastamobhyām) - from/by passion and inertia

(noun)

Ablative, neuter, dual of rajastamas

rajastamas - passion and inertia (the two guṇas)

Compound type : dvandva (rajas+tamas)

• rajas – passion, activity, the quality of passion
  noun (neuter)
• tamas – inertia, darkness, ignorance, the quality of inertia
  noun (neuter)

Note: Used with 'rahitam' (free from).

रहितम् (rahitam) - free from, devoid of, deprived of

(adjective)

Nominative, neuter, singular of rahita

rahita - free from, devoid of, deprived of, abandoned

Past Passive Participle

Derived from root √rah (to abandon, leave)

Root: rah (class 1)

Note: Agrees with 'manaḥ'.

घनैः (ghanaiḥ) - by clouds, from clouds

(noun)

Instrumental, masculine, plural of ghana

ghana - cloud, mass, dense, solid

Note: Used with 'muktaḥ' (freed by/from).

मुक्तः (muktaḥ) - freed, liberated, released

(adjective)

Nominative, masculine, singular of mukta

mukta - freed, liberated, released, delivered

Past Passive Participle

Derived from root √muc (to free, release)

Root: muc (class 6)

Note: Agrees with 'oḍurāṭ'.

इव (iva) - like, as, just as

(indeclinable)

ओडुराट् (oḍurāṭ) - king of stars, moon

(noun)

Nominative, masculine, singular of oḍurāj

oḍurāj - moon, king of stars/constellations

Compound of 'oḍu' (star) and 'rājan' (king)

Compound type : tatpurusha (oḍu+rājan)

• oḍu – star, constellation
  noun (neuter)
• rājan – king, ruler
  noun (masculine)