sa'i between Safa and Marwah is one of the essential rites of both Haji and Umrah, and scholars agree that it should be preceded by Tawaf. The question of whether sa'i must immediately follow Tawaf or may be delayed is a practical concern for many jamaah haji, especially those who are elderly, ill, or overwhelmed by crowds. The general scholarly consensus is that performing sa'i immediately after Tawaf is the Sunnah and preferred practice, as this is what Nabi Muhammad (shallallahu alaihi wa sallam) consistently did. However, the schools differ on whether this immediate succession (muwalat) is wajib or merely sunnah.
The Hanafi, Shafi'i, and Hanbali schools all hold that while performing sa'i immediately after Tawaf is strongly sunnah, delaying it for a valid reason (such as fatigue, illness, shalat time, or extreme panas) is boleh and does not affect the validity of the sa'i. Even delaying until the following day is allowed in these schools, provided the sa'i is still performed. The Shafi'i school notes that an unreasonable delay without excuse, while valid, is makruh (disliked). The Hanbali school similarly permits delay but emphasizes that the jamaah haji should not leave Mekkah without completing sa'i.
The Maliki school takes the strictest position on this matter. Imam Malik held that the immediate succession (muwalat) between Tawaf and sa'i is a condition of validity. If the jamaah haji delays sa'i for an unreasonable amount of time without a valid excuse, the sa'i is invalidated and must be repeated preceded by a new Tawaf. However, a short delay for shalat, rest, eating, or drinking is excused and does not break the continuity. The definition of 'unreasonable delay' in the Maliki school is generally understood as a gap long enough that the two acts are no longer considered connected in customary terms.