The present article analyses a scene located in the so-called 'Corridor of the Bull' in the cenotaph of king Sethos I in Abydos, in which king Ramesses II and his eldest son, prince Amenhirkhopshef, are represented lassoing a bull. The iconographic treatment of the animal and human figures evidences, in our opinion, two levels of interpretation: 1) religious; from a specific meaning centred on what we believe was a ritualistic Osirian practice, 2) political; revealed through what the figures explain and how they complement one another. By using an iconologic approach, we offer an alternative explanation based on the valuable information contained in this relief.