"Your cameras were present at that time. I can send you the film in which the chief minister used anti-national words not once but twice," Omar told reporters here.
Mehbooba had on January 30 said in the Lower House that anybody weakening Article 370 will be doing the "biggest anti-national act".
Omar said the House was adjourned sine die "before time" and it reflected government's failures and weakness.
"They passed the Appropriation Bill and the Constitution Amendment Bill for GST in a hurry despite protests and adjourned the house sine-die. This proves how desperate the government is," Omar said.
"We demanded clarification from the chief minister on her remark. But the government hid behind the Speaker's chair," he said.