21. Intimation by candidate for election. - Every candidate for election, who had received any foreign contribution, at any time within one hundred and eighty days immediately preceding the date on which he is duly nominated as such candidate, shall give, within such time and in such manner as may be prescribed, an intimation to the Central Government or prescribed authority or both as to the amount of foreign contribution received by him, the source from which, and the manner in which, such foreign contribution was received and the purposes for which and the manner in which such foreign contribution was utilised by him.