وَهَذَا طَوَافُ الصَّدَرِ
Translation: And this is Tawaf al-Sadr.
Hadha points back to the seven-circuit tawaf just described. Tawaf al-Sadr names the tawaf associated with leaving and going back home.
It is also widely called Tawaf al-Wadaʿ, the farewell tawaf. These are not two separate seven-circuit obligations; they are two names for this departure-related tawaf.