ثُمَّ يَتَنَحَّى عَنْ ذَلِكَ الْمَكَانِ، فَيَغْسِلَ رِجْلَيْهِ.
Translation: Then move away from that place and wash both feet.
This step addresses a bathing area where water may collect around the feet; it is not an independent condition of the validity of ghusl.