Kalama Sutta
The Kālāma Sutta (also known as the Kālām Sutta; Sanskrit: Kālāma Sūtra; Burmese: Kalama thoke; Thai: กาลามสูตร, Kalama Sut, or Kesamutti Sutta; Pāli: Kesamuttisuttaṃ; Burmese: Kethamotti thoke), is a discourse of the Buddha contained in the Aṅguttara Nikaya of the Tipiṭaka. It is often cited by those of the Theravada and Mahayana traditions alike as the Buddha's "charter of free inquiry."
The Kālāma Sutta is also used for advocating prudence by the use of sound logical reasoning arguments and the dialectic principles for inquiries in the practice that relates to the discipline of seeking truth, wisdom and knowledge whether it is religious or not. In short, the Kālāma Sutta is opposed to blind faith, dogmatism and belief spawned from specious reasoning.
Read more about Kalama Sutta: Premise, The Buddha's Assurances