Declension table of ?śastramaya

Neuter	Singular	Dual	Plural
Nominative	śastramayam	śastramaye	śastramayāṇi
Vocative	śastramaya	śastramaye	śastramayāṇi
Accusative	śastramayam	śastramaye	śastramayāṇi
Instrumental	śastramayeṇa	śastramayābhyām	śastramayaiḥ
Dative	śastramayāya	śastramayābhyām	śastramayebhyaḥ
Ablative	śastramayāt	śastramayābhyām	śastramayebhyaḥ
Genitive	śastramayasya	śastramayayoḥ	śastramayāṇām
Locative	śastramaye	śastramayayoḥ	śastramayeṣu

Compound śastramaya -

Adverb -śastramayam -śastramayāt