Declension table of ?śayanastha

Masculine	Singular	Dual	Plural
Nominative	śayanasthaḥ	śayanasthau	śayanasthāḥ
Vocative	śayanastha	śayanasthau	śayanasthāḥ
Accusative	śayanastham	śayanasthau	śayanasthān
Instrumental	śayanasthena	śayanasthābhyām	śayanasthaiḥ śayanasthebhiḥ
Dative	śayanasthāya	śayanasthābhyām	śayanasthebhyaḥ
Ablative	śayanasthāt	śayanasthābhyām	śayanasthebhyaḥ
Genitive	śayanasthasya	śayanasthayoḥ	śayanasthānām
Locative	śayanasthe	śayanasthayoḥ	śayanastheṣu

Compound śayanastha -

Adverb -śayanastham -śayanasthāt