Declension table of ?siddhasthala

Neuter	Singular	Dual	Plural
Nominative	siddhasthalam	siddhasthale	siddhasthalāni
Vocative	siddhasthala	siddhasthale	siddhasthalāni
Accusative	siddhasthalam	siddhasthale	siddhasthalāni
Instrumental	siddhasthalena	siddhasthalābhyām	siddhasthalaiḥ
Dative	siddhasthalāya	siddhasthalābhyām	siddhasthalebhyaḥ
Ablative	siddhasthalāt	siddhasthalābhyām	siddhasthalebhyaḥ
Genitive	siddhasthalasya	siddhasthalayoḥ	siddhasthalānām
Locative	siddhasthale	siddhasthalayoḥ	siddhasthaleṣu

Compound siddhasthala -

Adverb -siddhasthalam -siddhasthalāt