<h1>Section 13(8) auction notice extinguishes borrower's redemption; sale certificate grants final purchaser rights; 2016 amendment applies post-Sept 1, 2016 defaults</h1> The top court held that once a secured creditor publishes an auction notice under Section 13(8) of the SARFAESI Act a borrower's right of redemption is extinguished and purchasers obtain indefeasible rights upon issuance of the sale certificate. The 2016 amendment to Section 13(8) applies to loans contracted before the amendment where default occurred after September 1, 2016. The court identified ambiguities between Section 13(8) and SARFAESI Rules, noted that third-party rights over secured assets would be non est, directed dissemination of the judgment to high courts and relevant ministries, and reinstated the secured creditor's sale by setting aside the earlier high court order.