Declension table of ?ṛbhumat

Masculine	Singular	Dual	Plural
Nominative	ṛbhumān	ṛbhumantau	ṛbhumantaḥ
Vocative	ṛbhuman	ṛbhumantau	ṛbhumantaḥ
Accusative	ṛbhumantam	ṛbhumantau	ṛbhumataḥ
Instrumental	ṛbhumatā	ṛbhumadbhyām	ṛbhumadbhiḥ
Dative	ṛbhumate	ṛbhumadbhyām	ṛbhumadbhyaḥ
Ablative	ṛbhumataḥ	ṛbhumadbhyām	ṛbhumadbhyaḥ
Genitive	ṛbhumataḥ	ṛbhumatoḥ	ṛbhumatām
Locative	ṛbhumati	ṛbhumatoḥ	ṛbhumatsu

Compound ṛbhumat -

Adverb -ṛbhumantam