Charak Samhita
उत्तानस्य शयानस्य शयने स्वास्तृते सुखम्। प्रलम्बशिरसः किञ्चित् किञ्चित् पादोन्नतस्य च॥९९॥
or mid noon, who has attended to his ablutions lying down supine comfortably on a well spread couch, with head extended and the foot slightly raised.
english translation
uttAnasya zayAnasya zayane svAstRte sukham। pralambazirasaH kiJcit kiJcit pAdonnatasya ca॥99॥
hk transliteration by Sanscript