Declension table of ?advayas

Neuter	Singular	Dual	Plural
Nominative	advayaḥ	advayasī	advayāṃsi
Vocative	advayaḥ	advayasī	advayāṃsi
Accusative	advayaḥ	advayasī	advayāṃsi
Instrumental	advayasā	advayobhyām	advayobhiḥ
Dative	advayase	advayobhyām	advayobhyaḥ
Ablative	advayasaḥ	advayobhyām	advayobhyaḥ
Genitive	advayasaḥ	advayasoḥ	advayasām
Locative	advayasi	advayasoḥ	advayaḥsu

Compound advayas -

Adverb -advayas