The “eye of a needle” has been claimed to be a gate in Jerusalem, which opened after the main gate was closed at night. A camel could only pass through this smaller gate if it was stooped and had its baggage removed. This story has been put forth since at least the 15th century, and possibly as far back as the 9th century. However, there is no evidence for the existence of such a gate.
- Can a Camel fit through a Needle? (christianpf.com)