In which case the supreme court observed?

“It is true that the constitution does not place any restriction on our power to review our earlier decisions or even to depart from them and there can be no doubt that in matters relating to the decision of constitutional points which have a significant impact on the fundamental rights of citizens, we would be prepared to review out earlier decision in the interest of public good. The doctrine of start decision may not strictly apply in this context and no one can dispute the position that the said doctrine should not be permitted to perpetuate erroneous decisions pronounced by this court to the detriment of general welfare. Even so, the normal principle that judgments pronounced by this court would be final, cannot be ignored and unless considerations of a substantial and compelling character make it necessary to do so, we should be slow to doubt the correctness of previous decisions  or to depart from the ….if the said decision has been followed in a large-number of cases, that again is a factor which must be taken into account”.