Section 160(3) in The Bombay Provincial Municipal Corporations Act, 1949
(3)The Commissioner shall repay from the Municipal Fund to the person constructing a drain in accordance with a requirement under sub-section (1) the entire expenses reasonably incurred by him in complying with such requirement and, until the drain becomes a municipal drain, he shall also from time to time repay to him from the Municipal Fund so much of any expenses reasonably incurred by him in repairing or maintaining it as may be attributable to the requirement having been made and complied with.