“Bhikkhus, when these four times are rightly developed and kept going, one gradually reaches the end of the taints. What four? The time for listening to the Dhamma, the time for discussing the Dhamma, the time for serenity, and the time for discernment. When these four times are rightly developed and kept going, one gradually reaches the end of the taints.

Anguttara Nikaya 4.147