Supreme Court in Phoolchand Bajranglal v. ITO [1993] 203 ITR 456/69 Taxman 627 - "One of the purposes of Section 147 appears to us to be to ensure that a party cannot get away by willfully making a false or untrue statement at the time of original assessment and when that falsity comes to notice, to turn round and say "you accepted my lie, now your hands are tied and you can do nothing."