Why is the terminal wall not necessarily included in the sale wording “ishtaraytu al-ard ... ila hadha al-haʾit”?

Particles of Meaning: Aw, Hatta, Ila, Ala, Fi and Ba

• Because the beginning of the purchased land must be treated separately
• Because the wall is a distinct self-standing object
• Because stating land boundaries is irrelevant to a sale
• Because land and walls must always be sold separately