accepted the money knowing it to be bribe, conviction cannot be sustained. 14. In P. Satyanarayana Murthy (supra), this Court took note of its verdict in B. Jayaraj vs. State of A.P. underlining that mere possession and recovery of currency notes from an accused without proof of demand would not establish an offence under Section 7 as well as Section 13(1)(d)(i) and (ii) of the Act. It was recounted as well that in the absence of any proof of demand for illegal gratification, the use of corrupt or illegal means or abuse of position as a public servant to obtain any valuable thing or pecuniary advantage cannot be held to be proved. Not only the proof of demand thus was held to be an indispensable essentiality and an inflexible statutory mandate for an offence under Sections 7 and 13 of the Act, it was held as well qua Section 20 of the Act, that any presumption thereunder would arise only on such proof of demand. This Court thus in P. Satyanarayana Murthy (supra) on a survey of its earlier decisions on the pre-requisites of Sections 7 and 13 and the proof thereof summed up its conclusions as hereunder: “23. The proof of demand of illegal gratification, thus, is the gravamen of the offence under Sections 7 and 13(1)(d)(i) and (ii) of the Act and in absence thereof, unmistakably the charge therefor, would fail. Mere acceptance of any amount allegedly by way of illegal gratification or recovery thereof, dehors the proof of demand, ipso facto, would thus not be sufficient to bring home the charge under these two sections of the Act. As a corollary, failure of the prosecution to prove the demand for illegal gratification would be fatal and mere recovery of the amount from the person accused of the offence under Sections 7 and 13 of the Act would not entail his conviction thereunder.” (emphasis supplied)”