What should we do about the six-and-a-half feddans of excess land we have, especially after receiving a report stating that it is five feddans subject to increase or decrease, and particularly after it became clear that our neighbor's land is short? Are we accountable for anything in this regard?

The error of the association's head or the ruler does not make unlawful things lawful. If you do not have a right to the plot of land, it is not permissible to seize it, and it must be returned to its owners. The ruler will decide and identify its owners. What you have cultivated on the land is yours as a standing crop, if it is confirmed that it is not rightfully yours, because there was no pure transgression.