Matsya Purana 220.9

220.9

bahavo naraśārdūla! teṣāṃ saṅkhyā na vidyate.
divā svāpaṃ kṣitīśastu viśeṣeṇa vivarjayet .. 220.9 ..

They should be kept away from the vices of drinking, hunting expeditions and gambling for many kings addicted to them have been ruined and their number is legion A sovereign should also not let the princes sleep in course of the day, nor should they be allowed to travel with no purpose in view—8 9