Declension table of ?upajapya

Masculine	Singular	Dual	Plural
Nominative	upajapyaḥ	upajapyau	upajapyāḥ
Vocative	upajapya	upajapyau	upajapyāḥ
Accusative	upajapyam	upajapyau	upajapyān
Instrumental	upajapyena	upajapyābhyām	upajapyaiḥ upajapyebhiḥ
Dative	upajapyāya	upajapyābhyām	upajapyebhyaḥ
Ablative	upajapyāt	upajapyābhyām	upajapyebhyaḥ
Genitive	upajapyasya	upajapyayoḥ	upajapyānām
Locative	upajapye	upajapyayoḥ	upajapyeṣu

Compound upajapya -

Adverb -upajapyam -upajapyāt