Addressing a news conference here at his residence, he said that he had resigned on the moral grounds after party high command has asked him to do.
Pardhan's daughter-in-law Parampreet Kaur died under mysterious circumstances on February 23 at her in-laws house.
Later, the Patiala Police had registered a case against the mayor, his second wife Paramjeet Kaur and son Harpreet Singh under the relevant sections of IPC on the basis of a statement by Amarjeet Singh, the father of the victim.
However, the SIT gave a clean chit to him due to "circumstantial evidences".
On being asked about his reclaim for the mayor post, the election for which would be held on April 2, after his clean chit, he said will not ask for any favour from the high command.
However, the SAD leader added if the party ask him to take the responsibility, he will not shirk it.