Declension table of ?tadavastha

Masculine	Singular	Dual	Plural
Nominative	tadavasthaḥ	tadavasthau	tadavasthāḥ
Vocative	tadavastha	tadavasthau	tadavasthāḥ
Accusative	tadavastham	tadavasthau	tadavasthān
Instrumental	tadavasthena	tadavasthābhyām	tadavasthaiḥ tadavasthebhiḥ
Dative	tadavasthāya	tadavasthābhyām	tadavasthebhyaḥ
Ablative	tadavasthāt	tadavasthābhyām	tadavasthebhyaḥ
Genitive	tadavasthasya	tadavasthayoḥ	tadavasthānām
Locative	tadavasthe	tadavasthayoḥ	tadavastheṣu

Compound tadavastha -

Adverb -tadavastham -tadavasthāt