अन्वयः

जलसम्भूतः found in water, सज्जनपूजितः worshipped by elders of the family, अयं मणिः this jewel यज्ञे in sacrificial ceremony, परमतुष्टेन great joy, धीमता wise one, शक्रेण by Indra, दत्तः given.

M N Dutt

And this jewel, obtained from the bed of the ocean, was conferred on him (Janaka) by the intelligent Sakra, greatly delighted for being adored in a sacrifice.

Summary

"This was found in water and was bestowed by Indra out of great joy on Janaka who had performed a grand sacrificial ceremony. So it was worshipped by elders of the family.

पदच्छेदः

अयं	इदम् (१.१)
हि	हि (अव्ययः)
जलसम्भूतो	जल–सम्भूत (√सम्-भू + क्त, १.१)
मणिः	मणि (१.१)
प्रवरपूजितः	प्रवर–पूजित (√पूजय् + क्त, १.१)
यज्ञे	यज्ञ (७.१)
परमतुष्टेन	परम–तुष्ट (√तुष् + क्त, ३.१)
दत्तः	दत्त (√दा + क्त, १.१)
शक्रेण	शक्र (३.१)
धीमता	धीमत् (३.१)

छन्दः

अनुष्टुप् [८]

छन्दोविश्लेषणम्

१	२	३	४	५	६	७	८
अ	यं	हि	ज	ल	सं	भू	तो
म	णिः	प्र	व	र	पू	जि	तः
य	ज्ञे	प	र	म	तु	ष्टे	न
द	त्तः	श	क्रे	ण	धी	म	ता