योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-26, verse-54

ब्रह्मात्मैकचिदाकाशमात्रबोधवतो मुनेः ।
पुत्रमित्रकलत्राणि कथं कानि कदा कुतः ॥ ५४ ॥

brahmātmaikacidākāśamātrabodhavato muneḥ ,
putramitrakalatrāṇi kathaṃ kāni kadā kutaḥ 54

54. brahmātmaika-cidākāśa-mātra-bodhavataḥ muneḥ
putra-mitra-kalatrāṇi katham kāni kadā kutaḥ

54. brahmātmaika-cidākāśa-mātra-bodhavataḥ muneḥ putra-mitra-kalatrāṇi katham,
kāni,
kadā,
kutaḥ [bhavanti]?

54. For the sage (muni) who possesses the knowledge (bodha) that Brahman (brahman) and the ātman (ātman) are one, a mere expanse of consciousness (cit) like space (ākāśa), how can there be sons, friends, or wives? Which ones? When? From where?

Words meanings summery:

• ब्रह्मात्मैक-चिदाकाश-मात्र-बोधवतः (brahmātmaika-cidākāśa-mātra-bodhavataḥ) - of one who possesses the knowledge of Brahman-Ātman-oneness as mere consciousness-space

• मुनेः (muneḥ) - of the sage

• पुत्र-मित्र-कलत्राणि (putra-mitra-kalatrāṇi) - sons, friends, and wives

• कथम् (katham) - how, in what manner

• कानि (kāni) - which ones, what

• कदा (kadā) - when

• कुतः (kutaḥ) - whence, from where, why

Words meanings and morphology

ब्रह्मात्मैक-चिदाकाश-मात्र-बोधवतः (brahmātmaika-cidākāśa-mātra-bodhavataḥ) - of one who possesses the knowledge of Brahman-Ātman-oneness as mere consciousness-space

(adjective)

Genitive, masculine, singular of brahmātmaika-cidākāśa-mātra-bodhavat

brahmātmaika-cidākāśa-mātra-bodhavat - possessing knowledge of Brahman (brahman) and ātman (ātman) as one, which is mere consciousness (cit)-space (ākāśa)

From bodha (knowledge) + possessive suffix vat

Compound type : bahuvrīhi (brahman+ātman+eka+cit+ākāśa+mātra+bodha+vat)

• brahman – the ultimate reality (brahman), the Absolute
  noun (neuter)
• ātman – the self (ātman), soul, spirit
  noun (masculine)
• eka – one, single, sole, oneness
  numeral (neuter)
• cit – consciousness (cit), awareness, intelligence
  noun (feminine)
  Root: cit (class 1)
• ākāśa – space (ākāśa), ether, sky
  noun (masculine)
  Prefix: ā
  Root: kāś (class 1)
• mātra – only, mere, solely
  indeclinable (neuter)
• bodha – knowledge, understanding, awakening
  noun (masculine)
  From root budh
  Root: budh (class 1)
• vat – possessing, having, like
  suffix
  Taddhita suffix used to form a possessive adjective

Note: Qualifies 'muneḥ'.

मुनेः (muneḥ) - of the sage

(noun)

Genitive, masculine, singular of muni

muni - sage, ascetic, contemplative (muni)

पुत्र-मित्र-कलत्राणि (putra-mitra-kalatrāṇi) - sons, friends, and wives

(noun)

Nominative, neuter, plural of putra-mitra-kalatra

putra-mitra-kalatra - sons, friends, and wives (plural collective)

Compound type : dvandva (putra+mitra+kalatra)

• putra – son
  noun (masculine)
• mitra – friend
  noun (masculine)
• kalatra – wife
  noun (neuter)

Note: Subject of the implied verb 'bhavanti'.

कथम् (katham) - how, in what manner

(indeclinable)

Note: Interrogative particle.

कानि (kāni) - which ones, what

(pronoun)

Nominative, neuter, plural of kim

kim - who, what, which, why

Note: Interrogative pronoun, agreeing with 'putra-mitra-kalatrāṇi'.

कदा (kadā) - when

(indeclinable)

Note: Interrogative particle.

कुतः (kutaḥ) - whence, from where, why

(indeclinable)

Note: Interrogative particle.