Declension table of mātṛ

Masculine	Singular	Dual	Plural
Nominative	mātā	mātārau	mātāraḥ
Vocative	mātaḥ	mātārau	mātāraḥ
Accusative	mātāram	mātārau	mātṝn
Instrumental	mātrā	mātṛbhyām	mātṛbhiḥ
Dative	mātre	mātṛbhyām	mātṛbhyaḥ
Ablative	mātuḥ	mātṛbhyām	mātṛbhyaḥ
Genitive	mātuḥ	mātroḥ	mātṝṇām
Locative	mātari	mātroḥ	mātṛṣu

Compound mātṛ -

Adverb -mātṛ