Declension table of agastya

Masculine	Singular	Dual	Plural
Nominative	agastyaḥ	agastyau	agastyāḥ
Vocative	agastya	agastyau	agastyāḥ
Accusative	agastyam	agastyau	agastyān
Instrumental	agastyena	agastyābhyām	agastyaiḥ agastyebhiḥ
Dative	agastyāya	agastyābhyām	agastyebhyaḥ
Ablative	agastyāt	agastyābhyām	agastyebhyaḥ
Genitive	agastyasya	agastyayoḥ	agastyānām
Locative	agastye	agastyayoḥ	agastyeṣu

Compound agastya -

Adverb -agastyam -agastyāt