The Tamil Nadu Chief Minister Mr. M. Karunanidhi today formally signed papers to gift his residence in Chennai for converting it into hospital for the poor after his life time. <br/><br/>Mr. Karunanidhi signed the stamp paper’s to register the property in the name of a trust named after his mother. <br/><br/>Later speaking to newsmen, he said the decision to gift his house gave him immense satisfaction.<br/>