مناسك حج - مكارم شيرازى، ناصر - الصفحة ١١٧ - Obligatory acts of Tawaf
But it was so much better that Tawaf could be performed in all parts of Masjid al- Haraam although it is better to observe the precaution. It means that if performing Tawaf in the defined distance is not hard then performer does not go out of that zone; and performing Tawaf in upper levels is not free of problem in other than necessary cases.
Seventh: Sequence is one of the conditions of Tawaf; it means that the performer should circumambulates seven complete rounds around the house of Kaba, and less than seven rounds is not enough, but as we said before, sequence is not one of the condition of supererogatory Tawaf.
Article ١٩٥- Whenever the time of obligatory or supererogatory" Vitr" prayer comes during obligatory Tawaf, then the performer can leave Tawaf, performs the prayer and then returns and continue the rest of Tawaf, if it is before the completion of four rounds of after that.