वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-4, chapter-18, verse-6

इक्ष्वाकूणामियं भूमिः सशैलवनकानना ।
मृगपक्षिमनुष्याणां निग्रहानुग्रहावपि ॥६॥

6. ikṣvākūṇāmiyaṃ bhūmiḥ saśailavanakānanā ,
mṛgapakṣimanuṣyāṇāṃ nigrahānugrahāvapi.

6. ikṣvākūṇām iyam bhūmiḥ saśailavanakānanā
mṛgapakṣimanuṣyāṇām nigrahānugrahāu api

6. iyam saśailavanakānanā bhūmiḥ ikṣvākūṇām
mṛgapakṣimanuṣyāṇām nigrahānugrahāu api

6. This land, with its mountains, forests, and groves, belongs to the Ikshvakus, and they also have the power to punish and protect (or control and favor) animals, birds, and humans.

Words meanings summery:

• इक्ष्वाकूणाम् (ikṣvākūṇām) - of the Ikshvakus (a solar dynasty)

• इयम् (iyam) - this (feminine)

• भूमिः (bhūmiḥ) - land, earth, ground

• सशैलवनकानना (saśailavanakānanā) - with mountains, forests, and groves

• मृगपक्षिमनुष्याणाम् (mṛgapakṣimanuṣyāṇām) - of animals, birds, and humans

• निग्रहानुग्रहाउ (nigrahānugrahāu) - control and favor, punishment and protection

• अपि (api) - also, even

Words meanings and morphology

इक्ष्वाकूणाम् (ikṣvākūṇām) - of the Ikshvakus (a solar dynasty)

(proper noun)

Genitive, masculine, plural of ikṣvāku

ikṣvāku - Ikshvāku (name of a mythical king, progenitor of the solar dynasty, to which Rama belongs)

Note: Indicates possession.

इयम् (iyam) - this (feminine)

(pronoun)

Nominative, feminine, singular of idam

idam - this, this one

Note: Modifies 'bhūmiḥ'.

भूमिः (bhūmiḥ) - land, earth, ground

(noun)

Nominative, feminine, singular of bhūmi

bhūmi - earth, land, ground, soil

Note: Subject.

सशैलवनकानना (saśailavanakānanā) - with mountains, forests, and groves

(adjective)

Nominative, feminine, singular of saśailavanakānanā

saśailavanakānanā - accompanied by mountains, forests, and groves

Compound type : bahuvrīhi (sa+śaila+vana+kānana)

• sa – with, accompanied by
  indeclinable
• śaila – mountain, rock
  noun (masculine)
• vana – forest, wood, grove
  noun (neuter)
• kānana – forest, grove, pleasure-garden
  noun (neuter)

Note: Modifies 'bhūmiḥ'.

मृगपक्षिमनुष्याणाम् (mṛgapakṣimanuṣyāṇām) - of animals, birds, and humans

(noun)

Genitive, masculine, plural of mṛgapakṣimanuṣya

mṛgapakṣimanuṣya - animals, birds, and humans (collectively)

Compound type : dvandva (mṛga+pakṣin+manuṣya)

• mṛga – wild animal, deer
  noun (masculine)
• pakṣin – bird
  noun (masculine)
• manuṣya – human, man
  noun (masculine)

Note: Pertains to 'nigrahānugrahāu'.

निग्रहानुग्रहाउ (nigrahānugrahāu) - control and favor, punishment and protection

(noun)

Nominative, masculine, dual of nigrahānugraha

nigrahānugraha - control and favor, punishment and protection, restraining and blessing

Compound type : dvandva (nigraha+anugraha)

• nigraha – restraint, suppression, punishment, control
  noun (masculine)
• anugraha – favor, grace, kindness, blessing, protection
  noun (masculine)

Note: Implied subject or object of a verb like 'exist' or 'are possessed'.

अपि (api) - also, even

(indeclinable)

Note: Emphatic particle.