Heresy in Buddhism

Views of the six heretical teachers
The views of six śramaṇa in the Pāli Canon, known as the six heretical teachers, based on the Sāmaññaphala Sutta.
Pūraṇa Kassapa
Amoralism
(akiriyavāda; natthikavāda)
There is no reward or punishment for either good or bad deeds.
Makkhali Gośāla (Ājīvika)
Fatalism
(ahetukavāda; niyativāda)
We are powerless; suffering is pre-destined.
Ajita Kesakambalī (Charvaka)
Materialism
(ucchedavāda; natthikavāda)
Live happily; with death, all is annihilated.
Pakudha Kaccāyana
Eternalism and categoricalism (sassatavāda; sattakāyavāda)Matter, pleasure, pain and the soul are eternal and do not interact.
Nigaṇṭha Ñāṭaputta (Jainism)
Restraint
(mahāvrata)
Be endowed with, cleansed by, and suffused with [merely] the avoidance of all evil.
Sañjaya Belaṭṭhiputta (Ajñana)
Agnosticism
(amarāvikkhepavāda)
"I don't think so. I don't think in that way or otherwise. I don't think not or not not." Suspension of judgement.

Tīrthika (Sanskrit: tīrthika, "ford-maker," meaning one who is attempting to cross the stream of saṃsāra) or titthiya (Pali) in Buddhism is a term referring to non-Buddhist heretics.

In the Tipitaka, the term titthiya may refer specifically to adherents of Jainism, Hinduism, and the six heretical teachers. Whereas a Buddhist takes refuge in the Three Jewels and treads the Middle Way between extremes, a titthiya does not. According to the Asoka Avadhana, the titthiyas that were jealous of Asoka's preaching of Buddhism gathered together and said to each other, "Should this king Asoka continue a worshipper of Buddha, all other persons encouraged by him would likewise become followers of Buddha." They then went to people's houses and declared that their religion is the true religion and that Buddhism gives no moksha.

Tīrthika is associated with the Jain term tirthankara "ford-maker".