Sūkasutta
Sāvatthinidānaṁ. “Seyyathāpi, bhikkhave, sālisūkaṁ vā yavasūkaṁ vā micchāpaṇihitaṁ hatthena vā pādena vā akkantaṁ hatthaṁ vā pādaṁ vā bhindissati, lohitaṁ vā uppādessatīti—netaṁ ṭhānaṁ vijjati. Taṁ kissa hetu? Micchāpaṇihitattā, bhikkhave, sūkassa. Evameva kho, bhikkhave, so vata bhikkhu micchāpaṇihitāya diṭṭhiyā micchāpaṇihitāya maggabhāvanāya avijjaṁ bhindissati, vijjaṁ uppādessati, nibbānaṁ sacchikarissatīti—netaṁ ṭhānaṁ vijjati. Taṁ kissa hetu? Micchāpaṇihitattā, bhikkhave, diṭṭhiyā.
A Spike
At Sāvatthī. “Mendicants, suppose a spike of rice or barley was pointing the wrong way. If you trod on it with hand or foot, it is impossible for it to break the skin and produce blood. Why is that? Because the spike is pointing the wrong way. In the same way, a mendicant whose view and development of the path is pointing the wrong way cannot break ignorance, produce knowledge, and realize extinguishment. Why is that? Because their view is pointing the wrong way.