Declension table of ?saptāsya

Masculine	Singular	Dual	Plural
Nominative	saptāsyaḥ	saptāsyau	saptāsyāḥ
Vocative	saptāsya	saptāsyau	saptāsyāḥ
Accusative	saptāsyam	saptāsyau	saptāsyān
Instrumental	saptāsyena	saptāsyābhyām	saptāsyaiḥ saptāsyebhiḥ
Dative	saptāsyāya	saptāsyābhyām	saptāsyebhyaḥ
Ablative	saptāsyāt	saptāsyābhyām	saptāsyebhyaḥ
Genitive	saptāsyasya	saptāsyayoḥ	saptāsyānām
Locative	saptāsye	saptāsyayoḥ	saptāsyeṣu

Compound saptāsya -

Adverb -saptāsyam -saptāsyāt