Declension table of ?mahāvākyopaniṣad

Feminine	Singular	Dual	Plural
Nominative	mahāvākyopaniṣat	mahāvākyopaniṣadau	mahāvākyopaniṣadaḥ
Vocative	mahāvākyopaniṣat	mahāvākyopaniṣadau	mahāvākyopaniṣadaḥ
Accusative	mahāvākyopaniṣadam	mahāvākyopaniṣadau	mahāvākyopaniṣadaḥ
Instrumental	mahāvākyopaniṣadā	mahāvākyopaniṣadbhyām	mahāvākyopaniṣadbhiḥ
Dative	mahāvākyopaniṣade	mahāvākyopaniṣadbhyām	mahāvākyopaniṣadbhyaḥ
Ablative	mahāvākyopaniṣadaḥ	mahāvākyopaniṣadbhyām	mahāvākyopaniṣadbhyaḥ
Genitive	mahāvākyopaniṣadaḥ	mahāvākyopaniṣadoḥ	mahāvākyopaniṣadām
Locative	mahāvākyopaniṣadi	mahāvākyopaniṣadoḥ	mahāvākyopaniṣatsu

Compound mahāvākyopaniṣat -

Adverb -mahāvākyopaniṣat