Declension table of ?bṛhannārāyaṇopaniṣad

Feminine	Singular	Dual	Plural
Nominative	bṛhannārāyaṇopaniṣat	bṛhannārāyaṇopaniṣadau	bṛhannārāyaṇopaniṣadaḥ
Vocative	bṛhannārāyaṇopaniṣat	bṛhannārāyaṇopaniṣadau	bṛhannārāyaṇopaniṣadaḥ
Accusative	bṛhannārāyaṇopaniṣadam	bṛhannārāyaṇopaniṣadau	bṛhannārāyaṇopaniṣadaḥ
Instrumental	bṛhannārāyaṇopaniṣadā	bṛhannārāyaṇopaniṣadbhyām	bṛhannārāyaṇopaniṣadbhiḥ
Dative	bṛhannārāyaṇopaniṣade	bṛhannārāyaṇopaniṣadbhyām	bṛhannārāyaṇopaniṣadbhyaḥ
Ablative	bṛhannārāyaṇopaniṣadaḥ	bṛhannārāyaṇopaniṣadbhyām	bṛhannārāyaṇopaniṣadbhyaḥ
Genitive	bṛhannārāyaṇopaniṣadaḥ	bṛhannārāyaṇopaniṣadoḥ	bṛhannārāyaṇopaniṣadām
Locative	bṛhannārāyaṇopaniṣadi	bṛhannārāyaṇopaniṣadoḥ	bṛhannārāyaṇopaniṣatsu

Compound bṛhannārāyaṇopaniṣat -

Adverb -bṛhannārāyaṇopaniṣat