Declension table of ?harṣayiṣyat

Masculine	Singular	Dual	Plural
Nominative	harṣayiṣyan	harṣayiṣyantau	harṣayiṣyantaḥ
Vocative	harṣayiṣyan	harṣayiṣyantau	harṣayiṣyantaḥ
Accusative	harṣayiṣyantam	harṣayiṣyantau	harṣayiṣyataḥ
Instrumental	harṣayiṣyatā	harṣayiṣyadbhyām	harṣayiṣyadbhiḥ
Dative	harṣayiṣyate	harṣayiṣyadbhyām	harṣayiṣyadbhyaḥ
Ablative	harṣayiṣyataḥ	harṣayiṣyadbhyām	harṣayiṣyadbhyaḥ
Genitive	harṣayiṣyataḥ	harṣayiṣyatoḥ	harṣayiṣyatām
Locative	harṣayiṣyati	harṣayiṣyatoḥ	harṣayiṣyatsu

Compound harṣayiṣyat -

Adverb -harṣayiṣyantam