Declension table of ?yavakya

Neuter	Singular	Dual	Plural
Nominative	yavakyam	yavakye	yavakyāni
Vocative	yavakya	yavakye	yavakyāni
Accusative	yavakyam	yavakye	yavakyāni
Instrumental	yavakyena	yavakyābhyām	yavakyaiḥ
Dative	yavakyāya	yavakyābhyām	yavakyebhyaḥ
Ablative	yavakyāt	yavakyābhyām	yavakyebhyaḥ
Genitive	yavakyasya	yavakyayoḥ	yavakyānām
Locative	yavakye	yavakyayoḥ	yavakyeṣu

Compound yavakya -

Adverb -yavakyam -yavakyāt