His assertion came even as a host of leaders like M M Joshi, Jaswant Singh, Sushma Swaraj, Venkaiah Naidu, Gopinath Munde, Ravi Shankar Prasad, Kalraj Mishra and Gopinath Munde flocked to Advani's residence to persuade him to reconsider his decision, saying his "guidance" was required by the party.
There were indications that a solution was being worked out and could be announced soon.
Singh, who appointed Modi as campaign committee chairman two days back triggering Advani's resignation, said, "Who is talking about changing the decision?... Where am I changing my decision?"
To a question on Advani, he said, "he has been our guide, is our guide and will remain our guide."
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His assertion about not changing the decision came amid hectic efforts to persuade Advani to reconsider his decision to quit all party posts.
Amidst these efforts, Advani got backing from Jaswant Singh who said a solution should be found to the questions raised the veteran leader soon in the interest of the party as well as the nation.
"A solution should be found soon to the questions raised by Advani ji. This is in the interest of the party. This is in the interest of the nation," Singh said after meeting Advani in Delhi.