Skandapurana 2.4.37.6

2.4.37.6

5 uṣaḥkālamārabhya dinakṛtyanirūpaṇam, tatra mūtrapurīṣotsarjanavidhiḥ, dantadhāvanādividhiḥ, snānādikṛtyam, haviṣyānnāmiṣānnanirūpaṇam, mukhaśuddhyādiśayanāntakarmanirūpaṇam.. 146 1

5. Determination of daily duties starting from dawn; therein, rules for discharging urine and feces; rules for cleaning teeth and the like; duties such as bathing; determination of sacrificial food and non-sacrificial/meat food; determination of rites from purification of the mouth up to sleeping. 146 1