What did the Buddha say about reincarnation? I want to know the original quotes by the Buddha and their sources.
Of course the Buddha wouldn't have used the word &quot;reincarnation&quot; because that's English (we've been talking on Meta recently about some difficulties translating Buddhist vocabulary into English).
This article, Buddhism and Death, says,

We can thus make a clear distinction between the terms &quot;Reincarnation&quot; and &quot;Rebirth.&quot;
&quot;Reincarnation&quot; is the term used by those who hold that a real entity (a &quot;soul&quot;) exists and passes on from life to life, occupying successive bodies.

Buddhism is more or less antithetical to the doctrine of a soul (it teaches Anatta), and so &quot;rebirth&quot; is a more usual translation than &quot;reincarnation&quot;, of &quot;what the Buddha said&quot;.
Then, searching for rebirth instead of reincarnation, you can find many suttas which mention &quot;rebirth&quot; -- for example using this search of the Access to Insight web site (on that page, click on &quot;suttas&quot; instead of &quot;All results&quot;) ... that search seems to return nearly 400 suttas ... and I hope that's an answer to your question?
Access to Insight hosts translations of many but not all of the suttas in the Pali canon.
These sources are the &quot;suttas&quot; of the &quot;Pali canon (Wikipedia)&quot;.
Additionally, note too that there are more than 100 topics tagged rebirth on this site (many more than are tagged 'reincarnation').