“Mendicants, there are these three kinds of purity. What three? Purity of body, speech, and mind. And what is purity of body? It’s when someone doesn’t kill living creatures, steal, or commit sexual misconduct. This is called ‘purity of body’.

And what is purity of speech? It’s when someone doesn’t use speech that’s false, backbiting, harsh, or nonsensical. This is called ‘purity of speech’.

And what is purity of mind? It’s when someone is content, kind-hearted, and has right view. This is called ‘purity of mind’. These are the three kinds of purity.”

Numbered Discourses 3.121 12. Bound for Loss Purity (2nd)

“Mendicants, there are these three kinds of purity. What three? Purity of body, speech, and mind. And what is purity of body? It’s when a mendicant doesn’t kill living creatures, steal, or have sex. This is called ‘purity of body’.

And what is purity of speech? It’s when a mendicant doesn’t use speech that’s false, backbiting, harsh, or nonsensical. This is called ‘purity of speech’.