Order confirming or setting aside sale

Order confirming or setting aside sale .- On the expiration of thirty days from the date of the sale, if no application to have the sale set aside is made under section 52 or section 53 or if any such application has been made and rejected, the Collector shall make an order confirming the sale : Provided that if the Collector has reason to think that the sale ought to be set aside notwithstanding that no such application has been made or on grounds other than those alleged in any application which has been made and rejected, he may, after recording his reasons in writing, set aside the sale.