Declension table of ?sādhyavasāya

Masculine	Singular	Dual	Plural
Nominative	sādhyavasāyaḥ	sādhyavasāyau	sādhyavasāyāḥ
Vocative	sādhyavasāya	sādhyavasāyau	sādhyavasāyāḥ
Accusative	sādhyavasāyam	sādhyavasāyau	sādhyavasāyān
Instrumental	sādhyavasāyena	sādhyavasāyābhyām	sādhyavasāyaiḥ sādhyavasāyebhiḥ
Dative	sādhyavasāyāya	sādhyavasāyābhyām	sādhyavasāyebhyaḥ
Ablative	sādhyavasāyāt	sādhyavasāyābhyām	sādhyavasāyebhyaḥ
Genitive	sādhyavasāyasya	sādhyavasāyayoḥ	sādhyavasāyānām
Locative	sādhyavasāye	sādhyavasāyayoḥ	sādhyavasāyeṣu

Compound sādhyavasāya -

Adverb -sādhyavasāyam -sādhyavasāyāt