Question: If I remember rightly the Buddha is quoted as saying something along the lines of:

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> Do not believe anything I say until you can prove it by yourself
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In what text(s) of the Buddhist cannon is this quoted?

Answer: 
I've searched the Internet, and found a [website](http://www.fakebuddhaquotes.com/believe-nothing-no-matter-where-you-read-it/) claiming that the quotation in question is a bad translation of a fragment from [Kalama Sutta](http://www.accesstoinsight.org/tipitaka/an/an03/an03.065.than.html) which in original goes:

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> “Now, Kalamas, don’t go by reports, by legends, by traditions, by scripture, by logical conjecture, by inference, by analogies, by agreement through pondering views, by probability, or by the thought, ‘This contemplative is our teacher.’ When you know for yourselves that, ‘These qualities are skillful; these qualities are blameless; these qualities are praised by the wise; these qualities, when adopted & carried out, lead to welfare & to happiness’ — then you should enter & remain in them.
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Buddha says that common sense and logical thinking is not enough to determine the truth. Only through his/her own experience or the experience of *the wise ones* one can be sure what to follow.
My teaching is not to believe rather to practice.
Buddhism is about reason, realisation and awakening. It has to be applicable and put to daily life living.