Declension table of ?prāśāstra

Neuter	Singular	Dual	Plural
Nominative	prāśāstram	prāśāstre	prāśāstrāṇi
Vocative	prāśāstra	prāśāstre	prāśāstrāṇi
Accusative	prāśāstram	prāśāstre	prāśāstrāṇi
Instrumental	prāśāstreṇa	prāśāstrābhyām	prāśāstraiḥ
Dative	prāśāstrāya	prāśāstrābhyām	prāśāstrebhyaḥ
Ablative	prāśāstrāt	prāśāstrābhyām	prāśāstrebhyaḥ
Genitive	prāśāstrasya	prāśāstrayoḥ	prāśāstrāṇām
Locative	prāśāstre	prāśāstrayoḥ	prāśāstreṣu

Compound prāśāstra -

Adverb -prāśāstram -prāśāstrāt