Declension table of ?ṛdhya

Neuter	Singular	Dual	Plural
Nominative	ṛdhyam	ṛdhye	ṛdhyāni
Vocative	ṛdhya	ṛdhye	ṛdhyāni
Accusative	ṛdhyam	ṛdhye	ṛdhyāni
Instrumental	ṛdhyena	ṛdhyābhyām	ṛdhyaiḥ
Dative	ṛdhyāya	ṛdhyābhyām	ṛdhyebhyaḥ
Ablative	ṛdhyāt	ṛdhyābhyām	ṛdhyebhyaḥ
Genitive	ṛdhyasya	ṛdhyayoḥ	ṛdhyānām
Locative	ṛdhye	ṛdhyayoḥ	ṛdhyeṣu

Compound ṛdhya -

Adverb -ṛdhyam -ṛdhyāt