Dighanikaya 1.9

1.9

Musāvādaṃ pahāyāti ettha musāti visaṃvādanapurekkhārassa atthabhañjanako vacīpayogo kāyapayogo, vā visaṃvādanādhippāyena panassa paravisaṃvādakakāyavacīpayogasamuṭṭhāpikā cetanā musāvādo.

In ‘having abandoned false speech,’ ‘falsehood’ here means a bodily effort or verbal effort that destroys the truth for one who intends to deceive; or, for one with the intention to deceive, the intention that originates the bodily or verbal effort that deceives another is false speech.