My grandfather had sold one tenth share out of 10 kanal agricultural land in te year 2000. This was one kanal = 12 viswa.
However, the buyers cheated and wrote the dimensions in such a way that the area was 15.5 viswa.
Later, they admitted that the dimensions were wrong and made an agreement for correct area. However, they didn't amend the sale deed and sold the property to someone.
Please advice whether the sale deed can be challaenged based on the above mentioned facts.