Prospective operation of amended subrogation law limits purchaser priority to the debt assumed under the transaction.

Section 92 of the Transfer of Property Act was treated as prospective because the amendment contained no clear indication of retrospective operation, and a declaratory form did not by itself displace existing rights. Under the pre-amendment law, partial subrogation was permissible: a purchaser who pays off an earlier charge in the circumstances of the transaction may keep that charge alive pro tanto. However, where the purchaser agreed as part of the bargain to discharge prior debts out of the purchase money, subrogation extends only to the amount of the assumed obligation and cannot exceed it. The purchaser's priority was therefore confined to the sum undertaken to be paid, with interest, and the remaining property and proceeds stayed available for the plaintiff's claim.

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Issues: (i) Whether Section 92 of the Transfer of Property Act, 1882 operated retrospectively. (ii) Whether partial subrogation was permissible under the law as it stood before the amendment. (iii) Whether a purchaser who paid prior encumbrances out of the purchase money, under the terms of the transaction, could claim subrogation and to what extent.

Issue (i): Whether Section 92 of the Transfer of Property Act, 1882 operated retrospectively.

Analysis: The general rule against retrospectivity applies unless the legislature clearly indicates a contrary intention. The amendment provision relied upon did not express such intention in clear terms, and the saving clause did not justify reading the section as retrospective merely by inference. Declaratory form does not by itself make a provision retrospective, especially where existing rights would be disturbed.

Conclusion: Section 92 was held not to operate retrospectively.

Issue (ii): Whether partial subrogation was permissible under the law as it stood before the amendment.

Analysis: The prior law, as declared by binding authority, recognised that a purchaser who, in the circumstances of the transaction, pays off an earlier charge may keep that charge alive pro tanto. The doctrine was treated as turning on the equitable principle that the payer should be assumed to have acted in his own interest, and not on a rigid rule forbidding part discharge from supporting subrogation.

Conclusion: Partial subrogation was held permissible under the pre-amendment law.

Issue (iii): Whether a purchaser who paid prior encumbrances out of the purchase money, under the terms of the transaction, could claim subrogation and to what extent.

Analysis: Where the purchaser undertakes to discharge prior debts as part of the bargain, the transaction is one of intended discharge of those encumbrances, and he cannot retain priority against an encumbrance which, on the agreed terms, he was bound to satisfy. The right of subrogation therefore extends only to the amount actually covered by the purchaser's assumed liability and cannot exceed the sum undertaken to be paid. On the facts, the purchaser's priority was confined to Rs. 6,000 with interest, and not the entire sum actually paid.

Conclusion: The purchaser was entitled to subrogation only to the limited extent of Rs. 6,000 with interest, and not beyond that amount.

Final Conclusion: The appeal resulted in a modified decree recognising only a limited priority in favour of the purchaser who discharged the earlier mortgage, while the remainder of the property and proceeds were left available to satisfy the plaintiff's claim.

Ratio Decidendi: In the absence of a clear legislative indication, a new provision is prospective, and under the pre-amendment law a purchaser who pays off prior encumbrances as part of the transaction may be subrogated pro tanto, but only to the extent of the obligation actually assumed.

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