Declension table of ?jāsya

Masculine	Singular	Dual	Plural
Nominative	jāsyaḥ	jāsyau	jāsyāḥ
Vocative	jāsya	jāsyau	jāsyāḥ
Accusative	jāsyam	jāsyau	jāsyān
Instrumental	jāsyena	jāsyābhyām	jāsyaiḥ jāsyebhiḥ
Dative	jāsyāya	jāsyābhyām	jāsyebhyaḥ
Ablative	jāsyāt	jāsyābhyām	jāsyebhyaḥ
Genitive	jāsyasya	jāsyayoḥ	jāsyānām
Locative	jāsye	jāsyayoḥ	jāsyeṣu

Compound jāsya -

Adverb -jāsyam -jāsyāt