Wudu is not required for sa'i between Safa and Marwah according to the consensus of scholars from all four schools of jurisprudence. Unlike তাওয়াফ, where the requirement of অযু is debated, scholars unanimously agree that sa'i is valid without অযু. This is a significant practical relief for হাজীগণ, especially during the extreme crowding and heat of হজ্জ season when maintaining ablution is very difficult.
The evidence for this ruling is clear. নবী করীম (সাল্লাল্লাহু আলাইহি ওয়া সাল্লাম) told Aisha when she was menstruating: 'Do everything the হাজীগণ do, but do not perform তাওয়াফ around the House.' This hadith explicitly permitted her to perform sa'i (and all other rites) while in a state of menstruation, which is a greater state of ritual impurity than minor hadath. If sa'i is valid without the major purification (গোসল) required after menstruation, it is certainly valid without the minor purification (অযু).
Sheikh Ibn Baz and Sheikh Ibn Uthaymeen both confirmed that while performing sa'i with অযু is better and more rewarding — as অযু is মুস্তাহাব for all acts of worship — it is not a condition of validity. A হাজী who breaks অযু during sa'i may continue without renewing it. The Permanent Committee issued the same ruling, emphasizing that this is a matter of scholarly agreement (ijma') and there is no significant dispute on this point.