Arvind Kejriwal on Monday alleged that there was a "quid pro quo" between the Congress, which is supporting Salman Khurshid on his NGO's controversy, and Samajwadi Party chief Mulayam Singh Yadav who is facing a disproportionate assets case in Supreme Court.

On Uttar Pradesh government's probe into the alleged irregularities of Dr Zakir Hussain Memorial Trust run by Khurshid and his wife Louise, Kejriwal said the Minister and the father-son duo of Yadav and Akhilesh will bail out each other.

"There is enough evidence building up but the question is who will conduct an investigation. Akhilesh Yadav? A case of disproportionate assets is pending against his father Mulayam Singh in Supreme Court. Who will appoint the government lawyer against Mulayam? The Law Minister will do.

"Now Khurshid will save Mulayam Singh and Mulayam's son will save Khurshid," he said addressing IAC activists on the fourth day of their protest at Parliament Street demanding Khurshid's resignation.

Kejriwal presented a disabled person who alleged that he was not provided any help as claimed by the NGO.

"Why is the Congress defending Khurshid's NGO? What is the relationship? Is it Khurshid's NGO or is it the Congress party's NGO? The party is definitely involved somewhere," he said.

Khurshid has denied the allegations of irregularities in his NGO.

Levelling fresh charges against Khurshid, Kejriwal alleged that one Pankaj Kumar from Mainpuri whose name figures in the list of beneficiaries did not get any help from the NGO.

"The document given to government says he has been provided with a hearing aid. But he has problems in his legs.

He was not given any hearing aid," Kejriwal claimed in the presence of Kumar.