The 'Chadar' will be carried to the shrine by members of Delhi State Urs Committee to the Dargah.
"I pray that our national capital and the country prospers with the blessings of almighty and peace and harmony reign," he said on the occasion.
Khanna also appealed to the pilgrims to offer prayers for unity and brotherhood during the annual Urs at Ajmer.
He appreciated the role of Urs Committee in making excellent arrangements in the city for the Urs devotees in transit.
The Urs is observed to mark the death anniversary of saint Khwaja Moinuddin Chishti.
Two more Congress MLAs today appeared to be switching loyalty to YSR Congress of Kadapa MP Jagan Mohan Reddy.