Declension table of ?śamastha

Masculine	Singular	Dual	Plural
Nominative	śamasthaḥ	śamasthau	śamasthāḥ
Vocative	śamastha	śamasthau	śamasthāḥ
Accusative	śamastham	śamasthau	śamasthān
Instrumental	śamasthena	śamasthābhyām	śamasthaiḥ śamasthebhiḥ
Dative	śamasthāya	śamasthābhyām	śamasthebhyaḥ
Ablative	śamasthāt	śamasthābhyām	śamasthebhyaḥ
Genitive	śamasthasya	śamasthayoḥ	śamasthānām
Locative	śamasthe	śamasthayoḥ	śamastheṣu

Compound śamastha -

Adverb -śamastham -śamasthāt