Devibhagavatapurana 4.12.29

4.12.29

nidrārthaṃ kalpayāmāsa saṃstaraṃ pallavānvitam |
tasminmunau cādarasthā cakāra vyajanaṃ śanaiḥ ||

For the Muni’s bedding to lie down and sleep, she used to gather soft, green leaves and with them she used to keep his bed ready; and when the Muni laid himself down, she used to fan him gently.