The World Federation One Stop Fiqh

Ritual 310

A pilgrim, performing tawaf, may find it necessary to interrupt it, due to sickness, carrying out an errand for a fellow believer, or attending to his own business.

If tawaf was obligatory, and he had completed the fourth round, his tawaf is valid. However, if he abandons it before completing the fourth round, his tawaf is invalidated. If tawaf was a recommended one, he can continue from where he stopped, even though he had not completed four rounds.