Mohamed Abdullahi Mohamed, a dual U.S.-Somali citizen and former prime minister, was sworn in as Somalia's new president on Wednesday.
Rao is set to reach here on Thursday amid a bitter war between AIADMK Gen Sec Sasikala and acting CM Panneerselvam.
Sibal said the opposition party will not allow Modi to speak in Parliament unless he apologised.
"...So much happened he did not get even a taint. Only Doctor Sahab (Manmohan Singh) knows the art of bathing wearing a rain coat," said Modi.
In terms of public perception, caretaker Chief Minister O Panneerselvam has a better rating than AIADMK General Secretary VK Sasikala, admit party officials in private.
Prime Minister Narendra Modi said his governments war against corruption and black money was not a political fight and said it was meant to empower honest people.
Modi says the fight against corruption and black money is not political.
Average assets of 60 MLAs contesting the 2017 Uttarakhand polls has nearly doubled in the last five years.
AIADMK is locked in an ugly war. Acting CM O Panneerselvam vowed to stay put in office while party General Secretary VK Sasikala accused him of trying to split the party.