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.
A text of the Buddhist Canon this quote is said to come from is the [Kalama Sutta](https://www.accesstoinsight.org/tipitaka/an/an03/an03.065.than.html); which is often misquoted and misrepresented. The [Kalama Sutta](https://www.accesstoinsight.org/tipitaka/an/an03/an03.065.than.html) basically recommends judging a path by its results, namely, does this method of practice lead to more wholesome states?
It isn't a "charter for free enquiry" as some claim, or an invitation to indulge personal views.