Ajahn Chah

This is Samadhi.

You're relaxed and at ease.

You enter and leave it without any problems.

The mind and heart are at ease.

If you genuinely have Samadhi like this, it means that sitting meditation and entering Samadhi for just 30 minutes or an hour will enable you to remain cool and peaceful for many days afterwards.

Experiencing the effects of Samadhi like this for several days has a purifying effect on the mind.

Whatever you experience will become an object for contemplation.

This is where the practice really begins.

It's the fruit which arises as Samadhi matures.

Samadhi performs one function, that of calming the mind, while morality and wisdom perform others.

These characteristics which you're focusing attention on and developing in the practice are linked, forming a circle.

Morality, samadhi and wisdom arise and mature

Once the mind is calm, it will become progressively more restrained and composed due to the presence of wisdom and the power of samadhi.

as the mind becomes more composed and refined.

This gives rise to an energy which acts to purify our morality.

Greater purity of our morality facilitates the development of stronger and more refined samadhi.

And this in turn supports the maturing of wisdom.

They assist each other in this way.

Each aspect of the practice acts as a supporting factor for each other.

And in the end, these terms become synonymous.