295(a) to investigate any case under this section.it is necessary to take sanction order from Central authority or any state authority except DM

295(a) to investigate(by below inspector rank officers) any case under this section.it is necessary to take sanction order from Central authority or any state authority except DM ( according to crpc 195.... DM can bi given sanction order if any inspector rank officer are investigating this case) ... please tell me in which section of penal law(Cr.PC and IPC) or any court judgement,
it is given