योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-49, verse-15

पितामहमिवाशेषशैलकाननशालिनम् ।
फलपल्लवपुष्पाणां कोशमेकमिवावनौ ॥ १५ ॥

pitāmahamivāśeṣaśailakānanaśālinam ,
phalapallavapuṣpāṇāṃ kośamekamivāvanau 15

15. pitāmaham iva aśeṣaśailakānanaśālinam
phalapallavapuṣpāṇām kośam ekam iva avanau

15. avanau phalapallavapuṣpāṇām ekam kośam
iva aśeṣaśailakānanaśālinam pitāmaham iva

15. Like the Grandsire (Pitāmaha) (Brahmā) himself, adorned with all mountains and forests; like a single treasure-house of fruits, sprouts, and flowers upon the earth.

Words meanings summery:

• पितामहम् (pitāmaham) - the creator deity Brahmā (Pitāmaha) (the Grandsire, Brahmā)

• इव (iva) - like, as if

• अशेषशैलकाननशालिनम् (aśeṣaśailakānanaśālinam) - endowed with all mountains and forests

• फलपल्लवपुष्पाणाम् (phalapallavapuṣpāṇām) - of fruits, sprouts, and flowers

• कोशम् (kośam) - treasure-house, store, sheath, bud

• एकम् (ekam) - one, single, unique

• इव (iva) - like, as if

• अवनौ (avanau) - on the earth, on the ground

Words meanings and morphology

पितामहम् (pitāmaham) - the creator deity Brahmā (Pitāmaha) (the Grandsire, Brahmā)

(proper noun)

Accusative, masculine, singular of pitāmaha

pitāmaha - paternal grandfather, great father, creator, Brahmā

इव (iva) - like, as if

(indeclinable)

अशेषशैलकाननशालिनम् (aśeṣaśailakānanaśālinam) - endowed with all mountains and forests

(adjective)

Accusative, masculine, singular of aśeṣaśailakānanaśālin

aśeṣaśailakānanaśālin - endowed with all mountains and forests

Compound type : bahuvrīhi (aśeṣa+śaila+kānana+śālin)

• aśeṣa – all, entire, complete, without remainder
  adjective (masculine)
  Prefix: a
• śaila – mountain, rock
  noun (masculine)
• kānana – forest, grove, wood
  noun (neuter)
• śālin – possessing, endowed with, adorned with
  adjective (masculine)
  From 'śāla' with suffix '-in'.

फलपल्लवपुष्पाणाम् (phalapallavapuṣpāṇām) - of fruits, sprouts, and flowers

(noun)

Genitive, neuter, plural of phalapallavapuṣpa

phalapallavapuṣpa - fruits, sprouts, and flowers

Compound type : dvandva (phala+pallava+puṣpa)

• phala – fruit, result, consequence
  noun (neuter)
• pallava – sprout, shoot, new leaf
  noun (masculine)
• puṣpa – flower, blossom
  noun (neuter)

कोशम् (kośam) - treasure-house, store, sheath, bud

(noun)

Accusative, masculine, singular of kośa

kośa - treasure-chest, store, treasury, sheath, bud, dictionary

एकम् (ekam) - one, single, unique

(numeral)

इव (iva) - like, as if

(indeclinable)

अवनौ (avanau) - on the earth, on the ground

(noun)

Locative, feminine, singular of avanī

avanī - earth, ground