Usbūʿ can mean a week in everyday language, but in this legal context it refers to seven complete circuits of tawaf.
For example, after one voluntary tawaf of seven circuits, the pilgrim performs two prayer units. The text does not say to pray those units once a calendar week.
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Book of Hajj: Sa’y between Safa and Marwa and the Day of Tarwiyah
Usbūʿ can mean a week in everyday language, but in this legal context it refers to seven complete circuits of tawaf.
For example, after one voluntary tawaf of seven circuits, the pilgrim performs two prayer units. The text does not say to pray those units once a calendar week.