Declension table of ?sahasriya

Neuter	Singular	Dual	Plural
Nominative	sahasriyam	sahasriye	sahasriyāṇi
Vocative	sahasriya	sahasriye	sahasriyāṇi
Accusative	sahasriyam	sahasriye	sahasriyāṇi
Instrumental	sahasriyeṇa	sahasriyābhyām	sahasriyaiḥ
Dative	sahasriyāya	sahasriyābhyām	sahasriyebhyaḥ
Ablative	sahasriyāt	sahasriyābhyām	sahasriyebhyaḥ
Genitive	sahasriyasya	sahasriyayoḥ	sahasriyāṇām
Locative	sahasriye	sahasriyayoḥ	sahasriyeṣu

Compound sahasriya -

Adverb -sahasriyam -sahasriyāt