Declension table of ?śastṛ

Masculine	Singular	Dual	Plural
Nominative	śastā	śastārau	śastāraḥ
Vocative	śastaḥ	śastārau	śastāraḥ
Accusative	śastāram	śastārau	śastṝn
Instrumental	śastrā	śastṛbhyām	śastṛbhiḥ
Dative	śastre	śastṛbhyām	śastṛbhyaḥ
Ablative	śastuḥ	śastṛbhyām	śastṛbhyaḥ
Genitive	śastuḥ	śastroḥ	śastṝṇām
Locative	śastari	śastroḥ	śastṛṣu

Compound śastṛ -

Adverb -śastṛ