Anandakanda 1.19.10

1.19.10

yāmaiścaturbhir divasastathā rātrirbhavetpriye /
evaṃ divāniśaṃ kiṃ tu pūrvāhṇo daśa nāḍikāḥ //

A day consists of four yāmas, and likewise a night, O beloved! / Thus is day and night. However, the forenoon is ten nāḍikās;