Bench: Sri Rajpal Yadav(Kz) & Dr. Manish Borad
193 ITR 321 (SC), wherein it was held as follows: "We are aware of the fact that, strictly speaking, res judicata does not apply to income tax proceedings. Again, each assessment year being a unit, what is decided in one year may not apply in the following year but where a fundamental aspect permeating through the different assessment years