योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-86, verse-43

अयमिन्द्रो महाबाहुः प्रजालंकृतदोत्तमः ।
त्रैलोक्यनगरीमेकः पाति पावनयज्ञभुक् ॥ ४३ ॥

ayamindro mahābāhuḥ prajālaṃkṛtadottamaḥ ,
trailokyanagarīmekaḥ pāti pāvanayajñabhuk 43

43. ayam indraḥ mahābāhuḥ prajā-alaṅkṛta-dos-uttamaḥ
pāvana-yajña-bhuk ekaḥ trai-lokya-nagarīm pāti

43. ayam indraḥ mahābāhuḥ prajā-alaṅkṛta-dos-uttamaḥ
pāvana-yajña-bhuk ekaḥ trai-lokya-nagarīm pāti

43. This mighty-armed Indra, whose excellent arms are glorified by his subjects, single-handedly protects the city of the three worlds (trilokī), for he is the enjoyer of pure Vedic rituals (yajña).

Words meanings summery:

• अयम् (ayam) - this, he

• इन्द्रः (indraḥ) - Indra (king of gods)

• महाबाहुः (mahābāhuḥ) - mighty-armed, having great arms

• प्रजा-अलङ्कृत-दोस्-उत्तमः (prajā-alaṅkṛta-dos-uttamaḥ) - whose excellent arms are glorified by his subjects

• पावन-यज्ञ-भुक् (pāvana-yajña-bhuk) - enjoyer of pure sacrifices

• एकः (ekaḥ) - one, alone, single-handedly

• त्रै-लोक्य-नगरीम् (trai-lokya-nagarīm) - the city of the three worlds

• पाति (pāti) - protects, guards, rules

Words meanings and morphology

अयम् (ayam) - this, he

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one

इन्द्रः (indraḥ) - Indra (king of gods)

(proper noun)

Nominative, masculine, singular of indra

indra - Indra, king of the gods, chief of the devas

महाबाहुः (mahābāhuḥ) - mighty-armed, having great arms

(adjective)

Nominative, masculine, singular of mahābāhu

mahābāhu - mighty-armed, having great arms

Compound type : bahuvrīhi (mahā+bāhu)

• mahā – great, mighty, large
  adjective
• bāhu – arm
  noun (masculine)

प्रजा-अलङ्कृत-दोस्-उत्तमः (prajā-alaṅkṛta-dos-uttamaḥ) - whose excellent arms are glorified by his subjects

(adjective)

Nominative, masculine, singular of prajālaṅkṛtadosuttama

prajālaṅkṛtadosuttama - whose excellent arms are glorified by his subjects

Compound type : bahuvrīhi (prajā+alaṅkṛta+dos+uttama)

• prajā – offspring, subjects, people
  noun (feminine)
• alaṅkṛta – adorned, decorated, honored, glorified
  adjective (masculine)
  Past Passive Participle
  P.P.P. of root kṛ with prefix alaṃ
  Prefix: alam
  Root: kṛ (class 8)
• dos – arm, forearm
  noun (feminine)
• uttama – best, excellent, highest
  adjective (masculine)

पावन-यज्ञ-भुक् (pāvana-yajña-bhuk) - enjoyer of pure sacrifices

(noun)

Nominative, masculine, singular of pāvanayajñabhuj

pāvanayajñabhuj - enjoyer of pure sacrifices

Compound type : tatpuruṣa (pāvana+yajña+bhuj)

• pāvana – purifying, pure, holy
  adjective (masculine)
  Derived from root pū (to purify)
  Root: pū (class 1)
• yajña – sacrifice, ritual offering
  noun (masculine)
  Derived from root yaj (to sacrifice)
  Root: yaj (class 1)
• bhuj – enjoyer, eater
  noun (masculine)
  Agent noun from root bhuj (to enjoy, eat)
  Root: bhuj (class 7)

एकः (ekaḥ) - one, alone, single-handedly

(pronoun)

Nominative, masculine, singular of eka

eka - one, single, alone

त्रै-लोक्य-नगरीम् (trai-lokya-nagarīm) - the city of the three worlds

(noun)

Accusative, feminine, singular of trailokyanagarī

trailokyanagarī - the city of the three worlds

Compound type : tatpuruṣa (trilokya+nagarī)

• trilokya – the three worlds
  noun (neuter)
• nagarī – city, town
  noun (feminine)

पाति (pāti) - protects, guards, rules

(verb)

3rd person , singular, active, present (laṭ) of pā

Root: pā (class 2)