Declension table of ?yaśasya

Neuter	Singular	Dual	Plural
Nominative	yaśasyam	yaśasye	yaśasyāni
Vocative	yaśasya	yaśasye	yaśasyāni
Accusative	yaśasyam	yaśasye	yaśasyāni
Instrumental	yaśasyena	yaśasyābhyām	yaśasyaiḥ
Dative	yaśasyāya	yaśasyābhyām	yaśasyebhyaḥ
Ablative	yaśasyāt	yaśasyābhyām	yaśasyebhyaḥ
Genitive	yaśasyasya	yaśasyayoḥ	yaśasyānām
Locative	yaśasye	yaśasyayoḥ	yaśasyeṣu

Compound yaśasya -

Adverb -yaśasyam -yaśasyāt