Luke 6:31
"And as ye would that men should do to you, do ye also to them likewise."
Cross References (ranked by relevance)
Matthew 7:12
31
Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.
Galatians 5:14
27
For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself.
Matthew 22:39
26
And the second is like unto it, Thou shalt love thy neighbour as thyself.