Declension table of ?sahasrin

Neuter	Singular	Dual	Plural
Nominative	sahasri	sahasriṇī	sahasrīṇi
Vocative	sahasrin sahasri	sahasriṇī	sahasrīṇi
Accusative	sahasri	sahasriṇī	sahasrīṇi
Instrumental	sahasriṇā	sahasribhyām	sahasribhiḥ
Dative	sahasriṇe	sahasribhyām	sahasribhyaḥ
Ablative	sahasriṇaḥ	sahasribhyām	sahasribhyaḥ
Genitive	sahasriṇaḥ	sahasriṇoḥ	sahasriṇām
Locative	sahasriṇi	sahasriṇoḥ	sahasriṣu

Compound sahasri -

Adverb -sahasri