Declension table of ?samatsara

Masculine	Singular	Dual	Plural
Nominative	samatsaraḥ	samatsarau	samatsarāḥ
Vocative	samatsara	samatsarau	samatsarāḥ
Accusative	samatsaram	samatsarau	samatsarān
Instrumental	samatsareṇa	samatsarābhyām	samatsaraiḥ samatsarebhiḥ
Dative	samatsarāya	samatsarābhyām	samatsarebhyaḥ
Ablative	samatsarāt	samatsarābhyām	samatsarebhyaḥ
Genitive	samatsarasya	samatsarayoḥ	samatsarāṇām
Locative	samatsare	samatsarayoḥ	samatsareṣu

Compound samatsara -

Adverb -samatsaram -samatsarāt