Though CBI gave clean chit to Raja Bhaiya, Azad had filed a protest application against it.
Raja Bhaiya would be allocated a ministry later.
Asked about which portfolio would be allocated to him, Singh said he would do his duty sincerely irrespective of the department he was given.
About the number of criminal cases pending against him, Singh said they were "courtesy BSP government".
When asked whether he was re-inducted as a minister in a "damage control" exercise after Muzaffarnagar riots to manage "Thakur" votes, Singh said "as far as I know, Mulayam Singh's politics is not based on casteism."
