Declension table of ?yaśastara

Neuter	Singular	Dual	Plural
Nominative	yaśastaram	yaśastare	yaśastarāṇi
Vocative	yaśastara	yaśastare	yaśastarāṇi
Accusative	yaśastaram	yaśastare	yaśastarāṇi
Instrumental	yaśastareṇa	yaśastarābhyām	yaśastaraiḥ
Dative	yaśastarāya	yaśastarābhyām	yaśastarebhyaḥ
Ablative	yaśastarāt	yaśastarābhyām	yaśastarebhyaḥ
Genitive	yaśastarasya	yaśastarayoḥ	yaśastarāṇām
Locative	yaśastare	yaśastarayoḥ	yaśastareṣu

Compound yaśastara -

Adverb -yaśastaram -yaśastarāt