Declension table of ?sadhastha

Neuter	Singular	Dual	Plural
Nominative	sadhastham	sadhasthe	sadhasthāni
Vocative	sadhastha	sadhasthe	sadhasthāni
Accusative	sadhastham	sadhasthe	sadhasthāni
Instrumental	sadhasthena	sadhasthābhyām	sadhasthaiḥ
Dative	sadhasthāya	sadhasthābhyām	sadhasthebhyaḥ
Ablative	sadhasthāt	sadhasthābhyām	sadhasthebhyaḥ
Genitive	sadhasthasya	sadhasthayoḥ	sadhasthānām
Locative	sadhasthe	sadhasthayoḥ	sadhastheṣu

Compound sadhastha -

Adverb -sadhastham -sadhasthāt