Declension table of ?kāṣya

Masculine	Singular	Dual	Plural
Nominative	kāṣyaḥ	kāṣyau	kāṣyāḥ
Vocative	kāṣya	kāṣyau	kāṣyāḥ
Accusative	kāṣyam	kāṣyau	kāṣyān
Instrumental	kāṣyeṇa	kāṣyābhyām	kāṣyaiḥ kāṣyebhiḥ
Dative	kāṣyāya	kāṣyābhyām	kāṣyebhyaḥ
Ablative	kāṣyāt	kāṣyābhyām	kāṣyebhyaḥ
Genitive	kāṣyasya	kāṣyayoḥ	kāṣyāṇām
Locative	kāṣye	kāṣyayoḥ	kāṣyeṣu

Compound kāṣya -

Adverb -kāṣyam -kāṣyāt