Declension table of ?sāyudha

Neuter	Singular	Dual	Plural
Nominative	sāyudham	sāyudhe	sāyudhāni
Vocative	sāyudha	sāyudhe	sāyudhāni
Accusative	sāyudham	sāyudhe	sāyudhāni
Instrumental	sāyudhena	sāyudhābhyām	sāyudhaiḥ
Dative	sāyudhāya	sāyudhābhyām	sāyudhebhyaḥ
Ablative	sāyudhāt	sāyudhābhyām	sāyudhebhyaḥ
Genitive	sāyudhasya	sāyudhayoḥ	sāyudhānām
Locative	sāyudhe	sāyudhayoḥ	sāyudheṣu

Compound sāyudha -

Adverb -sāyudham -sāyudhāt