And what are fabrications? These six classes of intention — intention with regard to form, intention with regard to sound, intention with regard to smell, intention with regard to taste, intention with regard to tactile sensation, intention with regard to ideas: these are called fabrications.
SN 22.56
"Intention, I tell you, is kamma. Intending, one does kamma by way of body, speech, & intellect."
AN 6.63
And what are fabrications? These three are fabrications: bodily
fabrications, verbal fabrications, mental fabrications. These are
called fabrications.
"In-&-out breaths are bodily; these are things tied up with the body.
That's why in-&-out breaths are bodily fabrications.
Having first directed one's thoughts and made an evaluation, one then
breaks out into speech. That's why directed thought & evaluation are
verbal fabrications.
SN 41.6
And why, bhikkhus, do you call them fabrications? ‘They fabricate the conditioned,’ bhikkhus, therefore they are called fabrications.
SN 22.79
And what is the conditioned that they fabrications?
They fabricate conditioned form as form;
they fabricate conditioned feeling as feeling;
they fabricate conditioned perception as perception;
they fabricate conditioned fabrications as fabrications;
they fabricate conditioned consciousness as consciousness.
SN 22.79
"From consciousness as a requisite condition comes name-&-form...
"From fabrications as a requisite condition comes consciousness...
"From ignorance as a requisite condition come fabrications.
SN 12.2
"And what is name-&-form? Feeling, perception, intention, contact, & attention: This is called name.
SN 12.2
what's called 'mind,' 'intellect,' or 'consciousness' by day and by night arises as one thing and ceases as another.
SN 12.61
It is as if two sheaves of reeds were to stand leaning against one another. In the same way, from name-&-form as a requisite condition comes consciousness, from consciousness as a requisite condition comes name-&-form.
SN 12.67