Principle, a principle has been explained in Butterworth's words and phrases, second edition, vol. 4 p. 177 thus:
A 'principle' means a general guiding rule, and does not include specific directions, which vary according to the subject-matter (Per Shearman, J., in M'Creach v. Frearson, 1922 WN 37), Consolidated Coffee Ltd. v. Coffee Board Banglore, AIR 1980 SC 1468 (1479): (1980) 3 SCC 358.
Means a general law or rule adopted or professed as a guide to action, Consolidated Coffee Ltd. v. Coffee Board, Bangalore, AIR 1980 SC 1468.