Declension table of sahasra

Masculine	Singular	Dual	Plural
Nominative	sahasraḥ	sahasrau	sahasrāḥ
Vocative	sahasra	sahasrau	sahasrāḥ
Accusative	sahasram	sahasrau	sahasrān
Instrumental	sahasreṇa	sahasrābhyām	sahasraiḥ sahasrebhiḥ
Dative	sahasrāya	sahasrābhyām	sahasrebhyaḥ
Ablative	sahasrāt	sahasrābhyām	sahasrebhyaḥ
Genitive	sahasrasya	sahasrayoḥ	sahasrāṇām
Locative	sahasre	sahasrayoḥ	sahasreṣu

Compound sahasra -

Adverb -sahasram -sahasrāt