योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-30, verse-7

प्रह्रादनामा बलवान्प्रधानात्मा बभूव ह ।
तेषां मध्ये महार्हाणां मणीनामिव कौस्तुभः ॥ ७ ॥

prahrādanāmā balavānpradhānātmā babhūva ha ,
teṣāṃ madhye mahārhāṇāṃ maṇīnāmiva kaustubhaḥ 7

7. prahlādanāmā balavān pradhānaātmā babhūva ha
teṣām madhye mahārghāṇām maṇīnām iva kaustubhaḥ

7. Among those sons, one named Prahlāda, who was powerful and possessed a pre-eminent intrinsic nature (ātman), indeed came to be, just like the Kaustubha gem among highly valuable jewels.

Words meanings summery:

• प्रह्लादनामा (prahlādanāmā) - Identifying the specific son. (named Prahlāda, bearing the name Prahlāda)

• बलवान् (balavān) - Describes Prahlāda's strength. (powerful, strong)

• प्रधानआत्मा (pradhānaātmā) - Describes Prahlāda's noble character and intrinsic nature (ātman). (having an excellent soul/nature, pre-eminent in essence)

• बभूव (babhūva) - Indicates his existence or emergence among the sons. (he was, he became)

• ह (ha) - Emphasizes the statement. (indeed, verily, surely)

• तेषाम् (teṣām) - Referring to the sons mentioned in the previous verse. (of them, among them)

• मध्ये (madhye) - Indicating Prahlāda's position among his brothers. (in the middle, among)

• महार्घाणाम् (mahārghāṇām) - Describes the high worth of the jewels in the simile. (of the highly valuable, of great price)

• मणीनाम् (maṇīnām) - The collection of jewels for comparison with Kaustubha. (of jewels, of gems)

• इव (iva) - Introduces a simile. (like, as, as if)

• कौस्तुभः (kaustubhaḥ) - The legendary jewel of Vishnu, used as a superlative comparison. (the Kaustubha gem)

Words meanings and morphology

प्रह्लादनामा (prahlādanāmā) - Identifying the specific son. (named Prahlāda, bearing the name Prahlāda)

(noun)

Nominative, masculine, singular of prahlādanāman

prahlādanāman - having the name Prahlāda

From prahlāda + nāman (name). ā is from nāman.

Compound type : bahuvrīhi (prahlāda+nāman)

• prahlāda – Prahlāda (a proper name)
  proper noun (masculine)
  From pra + hlād (to delight).
  Prefix: pra
  Root: hlād (class 1)
• nāman – name, appellation
  noun (neuter)

Note: Predicate nominative for the implied subject.

बलवान् (balavān) - Describes Prahlāda's strength. (powerful, strong)

(adjective)

Nominative, masculine, singular of balavat

balavat - strong, powerful, mighty, endowed with strength

From bala (strength) + vat suffix (possessive).

Note: Adjective modifying Prahlāda.

प्रधानआत्मा (pradhānaātmā) - Describes Prahlāda's noble character and intrinsic nature (ātman). (having an excellent soul/nature, pre-eminent in essence)

(noun)

Nominative, masculine, singular of pradhānātman

pradhānātman - having an excellent (ātman), of superior intrinsic nature

From pradhāna (principal, excellent) + ātman (self, soul).

Compound type : bahuvrīhi (pradhāna+ātman)

• pradhāna – chief, principal, excellent, main
  adjective
  From pra + dhā (to place) + ana.
  Prefix: pra
  Root: dhā (class 3)
• ātman – self, soul, spirit, essence, intrinsic nature
  noun (masculine)

Note: Adjective modifying Prahlāda.

बभूव (babhūva) - Indicates his existence or emergence among the sons. (he was, he became)

(verb)

3rd person , singular, active, perfect (lit) of bhū

Perfect tense, third person singular

Reduplicated perfect form of bhū.

Root: bhū (class 1)

ह (ha) - Emphasizes the statement. (indeed, verily, surely)

(indeclinable)

तेषाम् (teṣām) - Referring to the sons mentioned in the previous verse. (of them, among them)

(pronoun)

Genitive, masculine, plural of tad

tad - that, he, she, it

Genitive plural masculine/neuter.

Note: Partitive genitive: 'among them'.

मध्ये (madhye) - Indicating Prahlāda's position among his brothers. (in the middle, among)

(indeclinable)

Often used as an indeclinable madhye (locative form functioning adverbially).

Note: Often functions as a postposition with genitive.

महार्घाणाम् (mahārghāṇām) - Describes the high worth of the jewels in the simile. (of the highly valuable, of great price)

(adjective)

Genitive, masculine, plural of mahārgha

mahārgha - highly valuable, precious, of great price

From mahā (great) + argha (value).

Compound type : karmadhāraya (mahā+argha)

• mahā – great, large, mighty
  adjective (feminine)
  Feminine stem of mahat.
• argha – value, price, worth
  noun (masculine)
  From root arh (to deserve).
  Root: arh (class 1)

Note: Modifies maṇīnām.

मणीनाम् (maṇīnām) - The collection of jewels for comparison with Kaustubha. (of jewels, of gems)

(noun)

Genitive, masculine, plural of maṇi

maṇi - jewel, gem, pearl

Note: i-stem noun.

इव (iva) - Introduces a simile. (like, as, as if)

(indeclinable)

कौस्तुभः (kaustubhaḥ) - The legendary jewel of Vishnu, used as a superlative comparison. (the Kaustubha gem)

(proper noun)

Nominative, masculine, singular of kaustubha

kaustubha - the Kaustubha gem (a jewel obtained from the churning of the ocean, worn by Vishnu)

Note: Subject of the simile.