Resting during sa'i is permissible according to the consensus of scholars from all four schools of jurisprudence. A حاجی may sit down at Safa, Marwah, or anywhere along the Mas'a corridor to rest, drink water, or recover from fatigue without invalidating their sa'i. The continuity (muwalah) of sa'i is مستحب (mustahabb) but is not a condition (shart) for its validity جمہور علماء کے مطابق.
Sheikh Ibn Uthaymeen explicitly stated that taking breaks during sa'i for rest, water, or to use the restroom is permissible, and the حاجی resumes from where they stopped. He noted that the Mas'a is a long corridor (approximately 450 meters each way), and performing seven complete laps is physically demanding, especially in the heat. Islam does not impose unnecessary hardship, and resting is a natural and permitted response to fatigue.
If the iqamah for an واجب نماز is called during sa'i, the حاجی should stop, join the congregational نماز, and then resume their sa'i from the point where they stopped. Sheikh Ibn Baz confirmed this ruling, adding that resting on Safa or Marwah to make دعا (دعا) is actually from the Sunnah, as نبی کریم used to make lengthy دعائیں while standing on Safa and Marwah. The key point is that the حاجی must complete all seven laps — the breaks in between do not invalidate the previously completed laps.