Declension table of ?yaśasya

Masculine	Singular	Dual	Plural
Nominative	yaśasyaḥ	yaśasyau	yaśasyāḥ
Vocative	yaśasya	yaśasyau	yaśasyāḥ
Accusative	yaśasyam	yaśasyau	yaśasyān
Instrumental	yaśasyena	yaśasyābhyām	yaśasyaiḥ yaśasyebhiḥ
Dative	yaśasyāya	yaśasyābhyām	yaśasyebhyaḥ
Ablative	yaśasyāt	yaśasyābhyām	yaśasyebhyaḥ
Genitive	yaśasyasya	yaśasyayoḥ	yaśasyānām
Locative	yaśasye	yaśasyayoḥ	yaśasyeṣu

Compound yaśasya -

Adverb -yaśasyam -yaśasyāt