Section 186(1)(a) in Madras Estates Land Act, 1908
(a)If the District Collector on the application of a landholder, is satisfied after giving notice to the ryot or inamdar, as the case may be, and making such inquiry as he thinks fit, that the landholder is desirous of acquiring any land within the limits of his estate in the occupation of a ryot or an inamdar, for some reasonable and sufficient purpose having relation to the good of the holding, if any, of which such land forms part, or of the estate, including the use of the land as building ground or for any religious, educational, communal or charitable purpose or for the opening and working of mines or for the purpose of a tank or of supply, drainage, surplus or irrigation channels, he may grant a certificate to the landholder specifying the land and stating that the purpose for which the landholder desires to acquire it is reasonable and sufficient.