योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-101, verse-3

सा बालस्य विनोदाय धात्री तस्य महामते ।
आख्यायिकां कथयति प्रसन्नमधुराक्षरम् ॥ ३ ॥

sā bālasya vinodāya dhātrī tasya mahāmate ,
ākhyāyikāṃ kathayati prasannamadhurākṣaram 3

3. sā bālasya vinodāya dhātrī tasya mahāmate
ākhyāyikām kathayati prasannamadhurākṣaram

3. mahāmate sā dhātrī tasya bālasya vinodāya
prasannamadhurākṣaram ākhyāyikām kathayati

3. O great-minded one (Rāghava), that nurse, for the amusement of that boy, narrates a story in pleasant and sweet words.

Words meanings summery:

• सा (sā) - Refers to the nurse mentioned in the previous verse (she, that (feminine))

• बालस्य (bālasya) - of the boy, child's

• विनोदाय (vinodāya) - for amusement, for entertainment

• धात्री (dhātrī) - nurse, foster mother

• तस्य (tasya) - Refers to the boy (of him, his; of that)

• महामते (mahāmate) - Vocative address to Rāghava by Vasiṣṭha (O great-minded one)

• आख्यायिकाम् (ākhyāyikām) - story, tale

• कथयति (kathayati) - narrates, tells

• प्रसन्नमधुराक्षरम् (prasannamadhurākṣaram) - Describes the manner of narration (in pleasant and sweet words/syllables)

Words meanings and morphology

सा (sā) - Refers to the nurse mentioned in the previous verse (she, that (feminine))

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

Feminine nominative singular of 'tad'

बालस्य (bālasya) - of the boy, child's

(noun)

Genitive, masculine, singular of bāla

bāla - child, boy, young

विनोदाय (vinodāya) - for amusement, for entertainment

(noun)

Dative, masculine, singular of vinoda

vinoda - amusement, diversion, entertainment, pastime

Prefixes: vi+nud

Root: nud (class 6)

धात्री (dhātrī) - nurse, foster mother

(noun)

Nominative, feminine, singular of dhātrī

dhātrī - nurse, foster mother, wet-nurse

Root: dhā (class 3)

तस्य (tasya) - Refers to the boy (of him, his; of that)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, it

Masculine genitive singular of 'tad'

महामते (mahāmate) - Vocative address to Rāghava by Vasiṣṭha (O great-minded one)

(adjective)

Vocative, masculine, singular of mahāmati

mahāmati - great-minded, sagacious

Compound type : bahuvrīhi (mahā+mati)

• mahā – great, large, mighty
  adjective
• mati – mind, thought, intellect
  noun (feminine)
  Root: man (class 4)

आख्यायिकाम् (ākhyāyikām) - story, tale

(noun)

Accusative, feminine, singular of ākhyāyikā

ākhyāyikā - story, narrative, tale, anecdote

Prefixes: ā+khyā

Root: khyā (class 2)

कथयति (kathayati) - narrates, tells

(verb)

3rd person , singular, active, present (lat) of kath

Present Tense

Root 'kath', present tense, 3rd person singular active, Parasmaipada (causative of katha)

Root: kath (class 10)

प्रसन्नमधुराक्षरम् (prasannamadhurākṣaram) - Describes the manner of narration (in pleasant and sweet words/syllables)

(adjective)

Accusative, neuter, singular of prasannamadhurākṣaram

prasannamadhurākṣaram - having pleasant and sweet words/syllables; pleasantly and sweetly worded

Compound type : karmadhāraya (prasanna+madhura+akṣara)

• prasanna – clear, bright, pleased, propitious
  adjective (masculine)
  Past Passive Participle
  From pra-sad
  Prefix: pra
  Root: sad (class 1)
• madhura – sweet, melodious, charming
  adjective (masculine)
• akṣara – indestructible; syllable, letter, word
  noun (neuter)
  a (neg.) + kṣara (perishable)
  Prefix: a
  Root: kṣar (class 1)

Note: Used adverbially here.