Declension table of ?ṛṣisvara

Masculine	Singular	Dual	Plural
Nominative	ṛṣisvaraḥ	ṛṣisvarau	ṛṣisvarāḥ
Vocative	ṛṣisvara	ṛṣisvarau	ṛṣisvarāḥ
Accusative	ṛṣisvaram	ṛṣisvarau	ṛṣisvarān
Instrumental	ṛṣisvareṇa	ṛṣisvarābhyām	ṛṣisvaraiḥ ṛṣisvarebhiḥ
Dative	ṛṣisvarāya	ṛṣisvarābhyām	ṛṣisvarebhyaḥ
Ablative	ṛṣisvarāt	ṛṣisvarābhyām	ṛṣisvarebhyaḥ
Genitive	ṛṣisvarasya	ṛṣisvarayoḥ	ṛṣisvarāṇām
Locative	ṛṣisvare	ṛṣisvarayoḥ	ṛṣisvareṣu

Compound ṛṣisvara -

Adverb -ṛṣisvaram -ṛṣisvarāt