Declension table of ?sandhartṛ

Masculine	Singular	Dual	Plural
Nominative	sandhartā	sandhartārau	sandhartāraḥ
Vocative	sandhartaḥ	sandhartārau	sandhartāraḥ
Accusative	sandhartāram	sandhartārau	sandhartṝn
Instrumental	sandhartrā	sandhartṛbhyām	sandhartṛbhiḥ
Dative	sandhartre	sandhartṛbhyām	sandhartṛbhyaḥ
Ablative	sandhartuḥ	sandhartṛbhyām	sandhartṛbhyaḥ
Genitive	sandhartuḥ	sandhartroḥ	sandhartṝṇām
Locative	sandhartari	sandhartroḥ	sandhartṛṣu

Compound sandhartṛ -

Adverb -sandhartṛ