NEW DELHI, Jan 7 : Holding that BJP senior leader L K Advani was the "undisputed" prime ministerial candidate, party president Rajnath Singh on Wednesday ridiculed former Vice President Bhairon Singh Shekhawat's statement that he would contest the upcoming Lok Sabha elections if his health permits.

"Those who have taken a dip in the Ganges do not go for a swim in the well," Singh said, apparently indicating to 86-year-old Shekhawat that after holding constitutional post of the Vice-President, he should not attempt for another innings in active politics.

"Someone who has served on a constitutional post do not enter electoral fray. It is not in our tradition," he said.

Rajnath Singh, however, termed Advani as the "undisputed" choice for the top job.

"Advaniji is our undisputed candidate for the Prime Ministerial post and would continue to be so," he said. He refused to comment on as to what might have prompted Shekhawat make such a statement.

Shekhawat's statement in Jaipur has caught the BJP top brass unawares and left the party rank and file confused. It led to the party going in for a fire-fighting mode with the senior leader who declined to comment, saying "mavericks can't be responded."