Declension table of ?tasyamāna

Masculine	Singular	Dual	Plural
Nominative	tasyamānaḥ	tasyamānau	tasyamānāḥ
Vocative	tasyamāna	tasyamānau	tasyamānāḥ
Accusative	tasyamānam	tasyamānau	tasyamānān
Instrumental	tasyamānena	tasyamānābhyām	tasyamānaiḥ tasyamānebhiḥ
Dative	tasyamānāya	tasyamānābhyām	tasyamānebhyaḥ
Ablative	tasyamānāt	tasyamānābhyām	tasyamānebhyaḥ
Genitive	tasyamānasya	tasyamānayoḥ	tasyamānānām
Locative	tasyamāne	tasyamānayoḥ	tasyamāneṣu

Compound tasyamāna -

Adverb -tasyamānam -tasyamānāt