What is the correct fiqhi explanation of wa-la tasʿa bayna-l-milayn?

Book of Hajj: Omitted Arrival Tawaf, Arafat Standing and Women’s Rites

• Omit the entire Safa–Marwah saʿi
• Perform only three traversals
• Do not perform the brisk pace between markers
• Omit every Hajj tawaf