Article 141 of the Constitution lays down that the law declared by Supreme Court shall be binding on all courts within the territory of India. Therefore, the Supreme Court:
can reverse a previous decision only when that previous decision was given as a result of overlooking another previous decision
can reverse a previous decision only when a new legislation is enacted having the effect of abrogating decision.
is bound by its earlier decisions as the expression 'all courts' include Supreme Court also.
is not bound by its own decisions and may reverse a previous decision.