The judgment -debtor in an execution proceeding, filed a suit against the purchaster of a house in the court auction in the execution proceeding, for ejectment on the ground that he was the owner of the house and he did not execute any saledeed in favour of the purchaser. The purchaser contested on the ground that he purchased the house in a court -auction and a sale certificate was issued to him by the court, which does not require registration. Decide.    (5 marks)