Declension table of ?saṃsahasra

Masculine	Singular	Dual	Plural
Nominative	saṃsahasraḥ	saṃsahasrau	saṃsahasrāḥ
Vocative	saṃsahasra	saṃsahasrau	saṃsahasrāḥ
Accusative	saṃsahasram	saṃsahasrau	saṃsahasrān
Instrumental	saṃsahasreṇa	saṃsahasrābhyām	saṃsahasraiḥ saṃsahasrebhiḥ
Dative	saṃsahasrāya	saṃsahasrābhyām	saṃsahasrebhyaḥ
Ablative	saṃsahasrāt	saṃsahasrābhyām	saṃsahasrebhyaḥ
Genitive	saṃsahasrasya	saṃsahasrayoḥ	saṃsahasrāṇām
Locative	saṃsahasre	saṃsahasrayoḥ	saṃsahasreṣu

Compound saṃsahasra -

Adverb -saṃsahasram -saṃsahasrāt