Declension table of ?ṛṣṭimat

Masculine	Singular	Dual	Plural
Nominative	ṛṣṭimān	ṛṣṭimantau	ṛṣṭimantaḥ
Vocative	ṛṣṭiman	ṛṣṭimantau	ṛṣṭimantaḥ
Accusative	ṛṣṭimantam	ṛṣṭimantau	ṛṣṭimataḥ
Instrumental	ṛṣṭimatā	ṛṣṭimadbhyām	ṛṣṭimadbhiḥ
Dative	ṛṣṭimate	ṛṣṭimadbhyām	ṛṣṭimadbhyaḥ
Ablative	ṛṣṭimataḥ	ṛṣṭimadbhyām	ṛṣṭimadbhyaḥ
Genitive	ṛṣṭimataḥ	ṛṣṭimatoḥ	ṛṣṭimatām
Locative	ṛṣṭimati	ṛṣṭimatoḥ	ṛṣṭimatsu

Compound ṛṣṭimat -

Adverb -ṛṣṭimantam