Declension table of ?viṣṇuputra

Masculine	Singular	Dual	Plural
Nominative	viṣṇuputraḥ	viṣṇuputrau	viṣṇuputrāḥ
Vocative	viṣṇuputra	viṣṇuputrau	viṣṇuputrāḥ
Accusative	viṣṇuputram	viṣṇuputrau	viṣṇuputrān
Instrumental	viṣṇuputreṇa	viṣṇuputrābhyām	viṣṇuputraiḥ viṣṇuputrebhiḥ
Dative	viṣṇuputrāya	viṣṇuputrābhyām	viṣṇuputrebhyaḥ
Ablative	viṣṇuputrāt	viṣṇuputrābhyām	viṣṇuputrebhyaḥ
Genitive	viṣṇuputrasya	viṣṇuputrayoḥ	viṣṇuputrāṇām
Locative	viṣṇuputre	viṣṇuputrayoḥ	viṣṇuputreṣu

Compound viṣṇuputra -

Adverb -viṣṇuputram -viṣṇuputrāt