Declension table of ?sandhyāṃsa

Masculine	Singular	Dual	Plural
Nominative	sandhyāṃsaḥ	sandhyāṃsau	sandhyāṃsāḥ
Vocative	sandhyāṃsa	sandhyāṃsau	sandhyāṃsāḥ
Accusative	sandhyāṃsam	sandhyāṃsau	sandhyāṃsān
Instrumental	sandhyāṃsena	sandhyāṃsābhyām	sandhyāṃsaiḥ sandhyāṃsebhiḥ
Dative	sandhyāṃsāya	sandhyāṃsābhyām	sandhyāṃsebhyaḥ
Ablative	sandhyāṃsāt	sandhyāṃsābhyām	sandhyāṃsebhyaḥ
Genitive	sandhyāṃsasya	sandhyāṃsayoḥ	sandhyāṃsānām
Locative	sandhyāṃse	sandhyāṃsayoḥ	sandhyāṃseṣu

Compound sandhyāṃsa -

Adverb -sandhyāṃsam -sandhyāṃsāt