Declension table of ātmasiddhiśāstra

Neuter	Singular	Dual	Plural
Nominative	ātmasiddhiśāstram	ātmasiddhiśāstre	ātmasiddhiśāstrāṇi
Vocative	ātmasiddhiśāstra	ātmasiddhiśāstre	ātmasiddhiśāstrāṇi
Accusative	ātmasiddhiśāstram	ātmasiddhiśāstre	ātmasiddhiśāstrāṇi
Instrumental	ātmasiddhiśāstreṇa	ātmasiddhiśāstrābhyām	ātmasiddhiśāstraiḥ
Dative	ātmasiddhiśāstrāya	ātmasiddhiśāstrābhyām	ātmasiddhiśāstrebhyaḥ
Ablative	ātmasiddhiśāstrāt	ātmasiddhiśāstrābhyām	ātmasiddhiśāstrebhyaḥ
Genitive	ātmasiddhiśāstrasya	ātmasiddhiśāstrayoḥ	ātmasiddhiśāstrāṇām
Locative	ātmasiddhiśāstre	ātmasiddhiśāstrayoḥ	ātmasiddhiśāstreṣu

Compound ātmasiddhiśāstra -

Adverb -ātmasiddhiśāstram -ātmasiddhiśāstrāt