वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-39, verse-21

तेनोरसि निबद्धेन हारेण स महाकपिः ।
रराज हेमशैलेन्द्रश्चन्द्रेणाक्रान्तमस्तकः ॥२१॥

21. tenorasi nibaddhena hāreṇa sa mahākapiḥ ,
rarāja hemaśailendraścandreṇākrāntamastakaḥ.

21. tena urasi nibaddhena hāreṇa saḥ mahākapiḥ
rarāja hemaśailendraḥ candreṇa ākrāntamastakaḥ

21. urasi tena nibaddhena hāreṇa saḥ mahākapiḥ
candreṇa ākrāntamastakaḥ hemaśailendraḥ iva rarāja

21. With that necklace fastened on his chest, that great monkey (Hanumān) shone splendidly, resembling the lord of golden mountains (Meru) whose peak is graced by the moon.

Words meanings summery:

• तेन (tena) - by that (necklace) (by that)

• उरसि (urasi) - in the chest, on the breast

• निबद्धेन (nibaddhena) - by the fastened (necklace) (by that which is fastened/tied)

• हारेण (hāreṇa) - by the necklace

• सः (saḥ) - that great monkey (he, that)

• महाकपिः (mahākapiḥ) - Hanumān, the great monkey (great monkey)

• रराज (rarāja) - he shone, he appeared splendid

• हेमशैलेन्द्रः (hemaśailendraḥ) - Mount Meru, the chief golden mountain (lord of golden mountains, chief of golden mountains)

• चन्द्रेण (candreṇa) - by the moon

• आक्रान्तमस्तकः (ākrāntamastakaḥ) - whose peak is graced by the moon (whose summit is covered/occupied)

Words meanings and morphology

तेन (tena) - by that (necklace) (by that)

(pronoun)

Instrumental, masculine, singular of tad

tad - that, he, she, it

उरसि (urasi) - in the chest, on the breast

(noun)

Locative, neuter, singular of uras

uras - chest, breast

निबद्धेन (nibaddhena) - by the fastened (necklace) (by that which is fastened/tied)

(adjective)

Instrumental, masculine, singular of nibaddha

nibaddha - fastened, tied, bound, fixed

Past Passive Participle

PPP from root 'bandh' with prefix 'ni'

Prefix: ni

Root: bandh (class 9)

हारेण (hāreṇa) - by the necklace

(noun)

Instrumental, masculine, singular of hāra

hāra - necklace, string of pearls

Root: hṛ (class 1)

सः (saḥ) - that great monkey (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

महाकपिः (mahākapiḥ) - Hanumān, the great monkey (great monkey)

(noun)

Nominative, masculine, singular of mahākapi

mahākapi - great monkey

Compound type : karmadhāraya (mahā+kapi)

• mahā – great, large, mighty
  adjective (feminine)
• kapi – monkey
  noun (masculine)

रराज (rarāja) - he shone, he appeared splendid

(verb)

3rd person , singular, active, perfect (liṭ) of rāj

Perfect tense (Liṭ lakāra), 3rd person singular, active voice

Root: rāj (class 1)

हेमशैलेन्द्रः (hemaśailendraḥ) - Mount Meru, the chief golden mountain (lord of golden mountains, chief of golden mountains)

(noun)

Nominative, masculine, singular of hemaśailendra

hemaśailendra - king/lord of golden mountains (e.g., Meru)

Compound type : tatpuruṣa (hema+śaila+indra)

• hema – gold, golden
  noun (neuter)
• śaila – mountain, rock
  noun (masculine)
• indra – chief, lord, best
  noun (masculine)

चन्द्रेण (candreṇa) - by the moon

(noun)

Instrumental, masculine, singular of candra

candra - moon, luminous, shining

Root: cand (class 1)

आक्रान्तमस्तकः (ākrāntamastakaḥ) - whose peak is graced by the moon (whose summit is covered/occupied)

(adjective)

Nominative, masculine, singular of ākrāntamastaka

ākrāntamastaka - having its head/summit covered or graced

Compound type : bahuvrīhi (ākrānta+mastaka)

• ākrānta – overcome, attacked, pervaded, covered, reached
  adjective (masculine)
  Past Passive Participle
  PPP from root 'kram' with prefix 'ā'
  Prefix: ā
  Root: kram (class 1)
• mastaka – head, skull, summit, top
  noun (masculine)