Declension table of ?iṣṭitva

Neuter	Singular	Dual	Plural
Nominative	iṣṭitvam	iṣṭitve	iṣṭitvāni
Vocative	iṣṭitva	iṣṭitve	iṣṭitvāni
Accusative	iṣṭitvam	iṣṭitve	iṣṭitvāni
Instrumental	iṣṭitvena	iṣṭitvābhyām	iṣṭitvaiḥ
Dative	iṣṭitvāya	iṣṭitvābhyām	iṣṭitvebhyaḥ
Ablative	iṣṭitvāt	iṣṭitvābhyām	iṣṭitvebhyaḥ
Genitive	iṣṭitvasya	iṣṭitvayoḥ	iṣṭitvānām
Locative	iṣṭitve	iṣṭitvayoḥ	iṣṭitveṣu

Compound iṣṭitva -

Adverb -iṣṭitvam -iṣṭitvāt