A quine is a computer program which takes no input and produces a copy of its own source code as its only output.

The following sequence of bytecode is a valid #uxn quine. Uxn is at an advantage in that raw hex is valid uxn code. So the quine here reads its own program(without self-evaluating it, or introspection) and outputs itself again.

https://en.wikipedia.org/wiki/Quine_(computing)