This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

He told them to go barefoot, without a staff.

Matthew 10:10 View context

Nor scrip for [your] journey, neither two coats, neither shoes, nor yet staves: for the workman is worthy of his meat.

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Luke 9:3 View context

And he said unto them, Take nothing for [your] journey, neither staves, nor scrip, neither bread, neither money; neither have two coats apiece.

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Luke 10:4 View context

Carry neither purse, nor scrip, nor shoes: and salute no man by the way.

He told them to wear sandals and carry a staff.

Mark 6:8-9 View context

And commanded them that they should take nothing for [their] journey, save a staff only; no scrip, no bread, no money in [their] purse:

But [be] shod with sandals; and not put on two coats.