Declension table of ?upaneya

Neuter	Singular	Dual	Plural
Nominative	upaneyam	upaneye	upaneyāni
Vocative	upaneya	upaneye	upaneyāni
Accusative	upaneyam	upaneye	upaneyāni
Instrumental	upaneyena	upaneyābhyām	upaneyaiḥ
Dative	upaneyāya	upaneyābhyām	upaneyebhyaḥ
Ablative	upaneyāt	upaneyābhyām	upaneyebhyaḥ
Genitive	upaneyasya	upaneyayoḥ	upaneyānām
Locative	upaneye	upaneyayoḥ	upaneyeṣu

Compound upaneya -

Adverb -upaneyam -upaneyāt