Declension table of ?ṛbhuṣṭhira

Neuter	Singular	Dual	Plural
Nominative	ṛbhuṣṭhiram	ṛbhuṣṭhire	ṛbhuṣṭhirāṇi
Vocative	ṛbhuṣṭhira	ṛbhuṣṭhire	ṛbhuṣṭhirāṇi
Accusative	ṛbhuṣṭhiram	ṛbhuṣṭhire	ṛbhuṣṭhirāṇi
Instrumental	ṛbhuṣṭhireṇa	ṛbhuṣṭhirābhyām	ṛbhuṣṭhiraiḥ
Dative	ṛbhuṣṭhirāya	ṛbhuṣṭhirābhyām	ṛbhuṣṭhirebhyaḥ
Ablative	ṛbhuṣṭhirāt	ṛbhuṣṭhirābhyām	ṛbhuṣṭhirebhyaḥ
Genitive	ṛbhuṣṭhirasya	ṛbhuṣṭhirayoḥ	ṛbhuṣṭhirāṇām
Locative	ṛbhuṣṭhire	ṛbhuṣṭhirayoḥ	ṛbhuṣṭhireṣu

Compound ṛbhuṣṭhira -

Adverb -ṛbhuṣṭhiram -ṛbhuṣṭhirāt