Pemasutta 10.2

10.2

Idha, bhikkhave, bhikkhu na rūpaṃ attato samanupassati, na rūpavantaṃ vā attānaṃ, na attani vā rūpaṃ, na rūpasmiṃ vā attānaṃ;

It’s when a mendicant doesn’t regard form as self, self as having form, form in self, or self in form.