The Compendium of Kāśyapa 7.4.22

7.4.22

nivāte puṣpakaṃ pūtamaparāhṇe prayojayet
niśi vā śuṣkacūrṇasya pūrayitvā'kṣiṇī svapet

In a place free of draughts, one should apply purified puṣpaka in the afternoon; / or at night, having filled the two eyes with its dry powder, one should sleep.