Declension table of ?śāyasthi

Masculine	Singular	Dual	Plural
Nominative	śāyasthiḥ	śāyasthī	śāyasthayaḥ
Vocative	śāyasthe	śāyasthī	śāyasthayaḥ
Accusative	śāyasthim	śāyasthī	śāyasthīn
Instrumental	śāyasthinā	śāyasthibhyām	śāyasthibhiḥ
Dative	śāyasthaye	śāyasthibhyām	śāyasthibhyaḥ
Ablative	śāyastheḥ	śāyasthibhyām	śāyasthibhyaḥ
Genitive	śāyastheḥ	śāyasthyoḥ	śāyasthīnām
Locative	śāyasthau	śāyasthyoḥ	śāyasthiṣu

Compound śāyasthi -

Adverb -śāyasthi