After his party leaders raised a hue and cry over Prime Minister Manmohan Singh's alleged 'impolite' behaviour, Leader of Opposition L K Advani Saturday broke his silence on the matter saying the issue relating to that incident is over.

"Woh mudda, jo us ghatna ke bare me hai, who khatam ho gaya (the issue related to that incident has ended)," he told the television channel Aaj Tak.

Advani said efforts should now focus on rebuilding the relationship between the government and the opposition in which the former has "greater responsibility".

On the incident that allegedly took place when an NDA delegation led by him called on the prime minister to submit a memorandum suggesting amendments in the Finance Bill, he said "that experience was unique".

"None of the seven of us (who were in the NDA delegation) have had such an experience," Advani said.

Denying that the NDA had kicked up the row as part of its "strategy", the former deputy prime minister said "we praised him (Singh) when he became the prime minister."

Advani said when Jaswant Singh called up Atal Bihari Vajpayee to inform him about the incident at his behest, the former prime minister quipped "thank God, I was not there".

NDA convenor George Fernandes also said that the controversy surrounding issue had been resolved after the prime minister had 'cleared his stand' to

Advani and Jaswant Singh.

The NDA would not rake up the issue again, he said.

The former defence minister said that the image of the Indian parliamentary system had taken a beating all over the world because of the presence of tainted ministers in the Union and state governments.

The NDA convenor expressed concern that use of unparliamentary language inside the House had increased which was not a good sign for a democracy.

''It has to be checked at any cost,'' he said adding he had never heard such low level expressions in Parliament ever since he became a member in 1967.

Fernandes said that it was the responsibility of the ruling party to run the House smoothly with confidence of opposition parties.