Explanation:

Section 399 is about preparation to commit dacoity. Preparation to commit crime implies arrangement of necessary means for the commission of crime, like procuring poison, weapons etc. Generally preparation to commit crime is notpuriishable, but there are certain exceptional classes of crime whose preparation to commit it is punishable under Indian Penal Code. I These exceptional circumstances include: (2 preparation to wage war against Govt (Section 122) (h) Preparation to commit depredation on the territories ofanypower at peace with govt. of India. (Sec. 126) (i4) Preparation to commit dacoity. ('Sec. 399) (iv) making or selling or being in possession of instruments for counterfeiting coins or govt. stamps etc. (223- 235 and 257) (v) possession of false weights and measures, government stamp, counterfeit coins etc