Digha Nikaya 33 (dn33:2.2.101)

So ‘mā hevan’tissa vacanīyo ‘māyasmā evaṁ avaca, mā bhagavantaṁ abbhācikkhi, na hi sādhu bhagavato abbhakkhānaṁ, na hi bhagavā evaṁ vadeyya.