Rasarnavasudhakara 2.206

2.206

atha (32) suptiḥ-
udreka eva nidrāyāḥ suptiḥ syāt tatra vikriyāḥ |
indriyoparatir netra-mīlanaṃ srasta-gātratā | 92
utsvapnāyitanaiś calya-śvāsocchvāsādayo' pi ca ||

Now (32) sleep (supti):
The intensification of drowsiness is sleep; its modifications are:
the cessation of the senses, closing of the eyes, slackness of the limbs, / 92
and also talking in one's sleep, immobility, breathing in and out, and so forth.