Reflecting on the aggregates with the three universal truths of impermanence, suffering (discontentment), and not-self

At Sāvatthi.

"Form, bhikkhus, is impermanent. What is impermanent is suffering (discontentment); what is suffering is not-self; what is not-self should be seen as it truly is with correct wisdom: ‘This is not mine, I am not this, this is not my self.’

Feeling is impermanent. What is impermanent is suffering; what is suffering is not-self; what is not-self should be seen as it truly is with correct wisdom: ‘This is not mine, I am not this, this is not my self.’

Perception is impermanent. What is impermanent is suffering; what is suffering is not-self; what is not-self should be seen as it truly is with correct wisdom: ‘This is not mine, I am not this, this is not my self.’

Formations (bodily/verbal/mental) are impermanent. What is impermanent is suffering; what is suffering is not-self; what is not-self should be seen as it truly is with correct wisdom: ‘This is not mine, I am not this, this is not my self.’

Consciousness is impermanent. What is impermanent is suffering; what is suffering is not-self; what is not-self should be seen as it truly is with correct wisdom: ‘This is not mine, I am not this, this is not my self.’

Seeing thus, the wise bhikkhu here comprehends: ‘There is no further continuation of this state of being.’"

Related Teachings:

Teachings on Living Beings and the Five Aggregates - The five aggregates define all experiences a “living being” has, and all beings have these aggregates. A series of short teachings on understanding the aggregates.

A teaching on the Turning of the Aggregates of Clinging (SN 22.56) - Understanding the five aggregates through the perspective of the six sense bases, in light of each of the four noble truths.

The Uposatha Observance (AN 8.41) - A teaching on the eight precepts, to be followed for Uposatha Observance. This day is typically observed on new moon, full moon, and the two quarter moons in between.