Speaking here on the last day of the Sadbhavana fast, Naidu said Modi should be ready "to serve the nation".
"There is a lot of discussion as to whether Modi is a Prime Ministerial candidate. Is there any doubt if he can be a PM? He has all attributes," he said.
Naidu said there was no red-tape in Gujarat and people were happy to invest here, unlike (Congress-ruled) Andhra Pradesh. Modi was a dynamic leader with a character, capability and calibre, he said.
On post-Godhra riots, Naidu said, "Congress does not want to forget the incident and move forward. Every time they keep reciting Godhra..Godhra..." He challenged Congress to clear its name in the 1984 anti-Sikh riots.
Leader of the Opposition in the Lok Sabha, Sushma Swaraj said Modi had passed ''test by fire'' (Agni-pariksha), with the Supreme Court's latest ruling in Gulbarg Society case coming in his favour.