Declension table of ?viṣṇat

Masculine	Singular	Dual	Plural
Nominative	viṣṇan	viṣṇantau	viṣṇantaḥ
Vocative	viṣṇan	viṣṇantau	viṣṇantaḥ
Accusative	viṣṇantam	viṣṇantau	viṣṇataḥ
Instrumental	viṣṇatā	viṣṇadbhyām	viṣṇadbhiḥ
Dative	viṣṇate	viṣṇadbhyām	viṣṇadbhyaḥ
Ablative	viṣṇataḥ	viṣṇadbhyām	viṣṇadbhyaḥ
Genitive	viṣṇataḥ	viṣṇatoḥ	viṣṇatām
Locative	viṣṇati	viṣṇatoḥ	viṣṇatsu

Compound viṣṇat -

Adverb -viṣṇantam