Declension table of ?saru

Neuter	Singular	Dual	Plural
Nominative	saru	saruṇī	sarūṇi
Vocative	saru	saruṇī	sarūṇi
Accusative	saru	saruṇī	sarūṇi
Instrumental	saruṇā	sarubhyām	sarubhiḥ
Dative	saruṇe	sarubhyām	sarubhyaḥ
Ablative	saruṇaḥ	sarubhyām	sarubhyaḥ
Genitive	saruṇaḥ	saruṇoḥ	sarūṇām
Locative	saruṇi	saruṇoḥ	saruṣu

Compound saru -

Adverb -saru