Declension table of ?śastranitya

Masculine	Singular	Dual	Plural
Nominative	śastranityaḥ	śastranityau	śastranityāḥ
Vocative	śastranitya	śastranityau	śastranityāḥ
Accusative	śastranityam	śastranityau	śastranityān
Instrumental	śastranityena	śastranityābhyām	śastranityaiḥ śastranityebhiḥ
Dative	śastranityāya	śastranityābhyām	śastranityebhyaḥ
Ablative	śastranityāt	śastranityābhyām	śastranityebhyaḥ
Genitive	śastranityasya	śastranityayoḥ	śastranityānām
Locative	śastranitye	śastranityayoḥ	śastranityeṣu

Compound śastranitya -

Adverb -śastranityam -śastranityāt