योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-128, verse-103

वेदागमपुराणेषु स्मृतिष्वपि महामुने ।
गुरुवाक्यं विधिः प्रोक्तो निषेधस्तद्विपर्ययः ॥ १०३ ॥

vedāgamapurāṇeṣu smṛtiṣvapi mahāmune ,
guruvākyaṃ vidhiḥ prokto niṣedhastadviparyayaḥ 103

103. veda-āgama-purāṇeṣu smṛtiṣu api mahāmune
guru-vākyam vidhiḥ proktaḥ niṣedhaḥ tat-viparyayaḥ

103. mahāmune,
veda-āgama-purāṇeṣu smṛtiṣu api guru-vākyam vidhiḥ proktaḥ (asti),
niṣedhaḥ tat-viparyayaḥ (ca asti).

103. O great sage, it is declared in the Vedas, Āgamas, Purāṇas, and also in the Smṛtis, that the word of a spiritual teacher (guru) is a positive injunction (vidhi), and its opposite is a prohibition (niṣedha).

Words meanings summery:

• वेद-आगम-पुराणेषु (veda-āgama-purāṇeṣu) - in the Vedas, Āgamas, and Purāṇas

• स्मृतिषु (smṛtiṣu) - in the Smṛtis, in the traditional texts

• अपि (api) - also, even, too

• महामुने (mahāmune) - O great sage

• गुरु-वाक्यम् (guru-vākyam) - the guru's words, teacher's instruction

• विधिः (vidhiḥ) - injunction, rule, command, prescript (vidhi)

• प्रोक्तः (proktaḥ) - declared, stated, said

• निषेधः (niṣedhaḥ) - prohibition, denial, negative injunction (niṣedha)

• तत्-विपर्ययः (tat-viparyayaḥ) - its opposite, the reverse of that

Words meanings and morphology

वेद-आगम-पुराणेषु (veda-āgama-purāṇeṣu) - in the Vedas, Āgamas, and Purāṇas

(noun)

Locative, neuter, plural of veda-āgama-purāṇa

veda-āgama-purāṇa - Vedas, Āgamas, and Purāṇas (collections of sacred texts)

Compound type : Itaretara Dvandva (veda+āgama+purāṇa)

• veda – Veda (sacred Hindu scripture), knowledge
  noun (masculine)
  Derived from root vid
  Root: vid (class 2)
• āgama – Āgama (traditional doctrine, sacred text, especially Tantric), coming, approach
  noun (masculine)
  Derived from root gam with upasarga ā
  Prefix: ā
  Root: gam (class 1)
• purāṇa – Purāṇa (ancient narrative, a class of Hindu religious texts), ancient
  noun (neuter)

स्मृतिषु (smṛtiṣu) - in the Smṛtis, in the traditional texts

(noun)

Locative, feminine, plural of smṛti

smṛti - memory, tradition, sacred law (smṛti)

Derived from root smṛ

Root: smṛ (class 1)

अपि (api) - also, even, too

(indeclinable)

महामुने (mahāmune) - O great sage

(noun)

Vocative, masculine, singular of mahā-muni

mahā-muni - great sage, great ascetic

Compound type : Karmadhāraya (mahā+muni)

• mahā – great, large, mighty
  adjective (neuter)
• muni – sage, ascetic, seer
  noun (masculine)

गुरु-वाक्यम् (guru-vākyam) - the guru's words, teacher's instruction

(noun)

Nominative, neuter, singular of guru-vākya

guru-vākya - the guru's words, teacher's instruction

Compound type : Ṣaṣṭhī Tatpuruṣa (guru+vākya)

• guru – teacher, spiritual teacher (guru), heavy, venerable
  noun (masculine)
• vākya – word, speech, sentence, instruction
  noun (neuter)
  Derived from root vac
  Root: vac (class 2)

विधिः (vidhiḥ) - injunction, rule, command, prescript (vidhi)

(noun)

Nominative, masculine, singular of vidhi

vidhi - injunction, rule, command, fate (vidhi)

Derived from root dhā with upasarga vi

Prefix: vi

Root: dhā (class 3)

प्रोक्तः (proktaḥ) - declared, stated, said

(participle)

Nominative, masculine, singular of prokta

prokta - declared, stated, said

Past Passive Participle

Prefix: pra

Root: vac (class 2)

निषेधः (niṣedhaḥ) - prohibition, denial, negative injunction (niṣedha)

(noun)

Nominative, masculine, singular of niṣedha

niṣedha - prohibition, denial, negative injunction (niṣedha)

Derived from root sidh with upasarga ni

Prefix: ni

Root: sidh (class 1)

तत्-विपर्ययः (tat-viparyayaḥ) - its opposite, the reverse of that

(noun)

Nominative, masculine, singular of tat-viparyaya

tat-viparyaya - its opposite, the reverse of that

Compound type : Ṣaṣṭhī Tatpuruṣa (tad+viparyaya)

• tad – that, its (stem for demonstrative pronoun)
  pronoun (neuter)
• viparyaya – reverse, inversion, opposite, contrary
  noun (masculine)
  Derived from root i with upasargas vi and pari
  Prefixes: vi+pari
  Root: i (class 2)