महाभारतः mahābhārataḥ - book-12, chapter-253, verse-20

तस्य स्म स्थाणुभूतस्य निर्विचेष्टस्य भारत ।
कुलिङ्गशकुनौ राजन्नीडं शिरसि चक्रतुः ॥२०॥

20. tasya sma sthāṇubhūtasya nirviceṣṭasya bhārata ,
kuliṅgaśakunau rājannīḍaṁ śirasi cakratuḥ.

20. tasya sma sthāṇubhūtasya nirviceṣṭasya bhārata
kulingaśakunau rājan nīḍam śirasi cakratuḥ

20. bhārata rājan nirviceṣṭasya sthāṇubhūtasya
tasya śirasi kulingaśakunau nīḍam cakratuḥ sma

20. O Bhārata, O King, while he remained like a motionless tree-trunk, a pair of kulinga birds built a nest on his head.

Words meanings summery:

• तस्य (tasya) - of the ascetic (his, of him, of that)

• स्म (sma) - indicates past action (indeed, certainly (particle indicating past tense))

• स्थाणुभूतस्य (sthāṇubhūtasya) - of the ascetic who had become like a post (of one who has become like a post/tree-trunk, motionless)

• निर्विचेष्टस्य (nirviceṣṭasya) - of the motionless ascetic (of one who is motionless, without activity)

• भारत (bhārata) - an address to Dhṛtarāṣṭra (O descendant of Bharata, O Bhārata)

• कुलिन्गशकुनौ (kulingaśakunau) - two kulinga birds, a pair of sparrows

• राजन् (rājan) - an address to Dhṛtarāṣṭra (O King)

• नीडम् (nīḍam) - a nest, a dwelling

• शिरसि (śirasi) - on the head

• चक्रतुः (cakratuḥ) - they built (a nest) (they made, they did)

Words meanings and morphology

तस्य (tasya) - of the ascetic (his, of him, of that)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

स्म (sma) - indicates past action (indeed, certainly (particle indicating past tense))

(indeclinable)

स्थाणुभूतस्य (sthāṇubhūtasya) - of the ascetic who had become like a post (of one who has become like a post/tree-trunk, motionless)

(adjective)

Genitive, masculine, singular of sthāṇubhūta

sthāṇubhūta - become like a post or tree-trunk, motionless

compound of sthāṇu and bhūta

Compound type : bahuvrīhi (sthāṇu+bhūta)

• sthāṇu – a post, a pillar, a tree-trunk
  noun (masculine)
  Root: sthā (class 1)
• bhūta – become, been, past passive participle of bhū (to be)
  adjective (masculine)
  Past Passive Participle
  From √bhū (to be)
  Root: bhū (class 1)

Note: Agrees with `tasya`.

निर्विचेष्टस्य (nirviceṣṭasya) - of the motionless ascetic (of one who is motionless, without activity)

(adjective)

Genitive, masculine, singular of nirviceṣṭa

nirviceṣṭa - motionless, without movement or activity

Compound type : bahuvrīhi (nis+viceṣṭa)

• nis – out, forth, without
  indeclinable
  prefix
• viceṣṭa – activity, movement, action
  noun (masculine)
  from vi-ceṣṭ
  Prefix: vi
  Root: ceṣṭ (class 1)

Note: Agrees with `tasya`.

भारत (bhārata) - an address to Dhṛtarāṣṭra (O descendant of Bharata, O Bhārata)

(proper noun)

Vocative, masculine, singular of bhārata

bhārata - descendant of Bharata, relating to Bharata

कुलिन्गशकुनौ (kulingaśakunau) - two kulinga birds, a pair of sparrows

(noun)

Nominative, masculine, dual of kulingaśakuna

kulingaśakuna - a kulinga bird (a kind of sparrow or wagtail)

Compound type : karmadhāraya (kulinga+śakuna)

• kulinga – a kind of bird, a sparrow, a wagtail
  noun (masculine)
• śakuna – a bird, an omen
  noun (masculine)

राजन् (rājan) - an address to Dhṛtarāṣṭra (O King)

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

नीडम् (nīḍam) - a nest, a dwelling

(noun)

Accusative, neuter, singular of nīḍa

nīḍa - nest, dwelling, abode

शिरसि (śirasi) - on the head

(noun)

Locative, neuter, singular of śiras

śiras - head, top

चक्रतुः (cakratuḥ) - they built (a nest) (they made, they did)

(verb)

3rd person , dual, active, perfect (lit) of kṛ

Root: kṛ (class 8)