فَإِذَا نَفَرَ إِلَى مَكَّةَ
Translation: When he departs for Makkah.
Nafara means to set off or depart. In this context, it is the journey back toward Makkah after completing the rites at Mina.
It is not the original departure from the miqat and does not restart ihram. The pilgrim has already performed the visitation tawaf; this passage introduces a different tawaf at the end of the Hajj journey.