ثُمَّ يُقِيمُ بِمَكَّةَ مُحْرِمًا، يَطُوفُ بِالْبَيْتِ كُلَّمَا بَدَا لَهُ، وَيُصَلِّي لِكُلِّ أُسْبُوعٍ رَكْعَتَيْنِ.
Translation: He then remains in Mecca in ihram, performs tawaf whenever he wishes, and prays two units for each completed set of seven circuits.
This is the pilgrim who remains in ihram during this stage, such as one performing ifrad or qiran. A pilgrim performing tamattu has a different sequence after completing the Umrah.
The word usbūʿ means one set of seven tawaf circuits here, not a calendar week. Two prayer units follow the completed set.