במדבר, פרק א׳, פסוק ז׳

As the Israelites organize their camp, specific leaders are chosen to represent each family group. The responsibility of leading the tribe of Judah is given to Nahshon, the son of Amminadab [ביאור שטיינזלץ].

A careful tradition surrounds the recording of his father's name. Throughout the entire Torah, the name Amminadab is deliberately preserved as a single, continuous word. It is always written in its full form, ensuring that the exact spelling remains consistent across the generations [מנחת שי].