Union Minister Hardeep Singh Puri reacted to AAP chief Arvind Kejriwal's remark comparing BJP to Ravan and said that he does not understand the basics of Ramayana. Puri said this in response to Kejriwal's remark where he misquoted Ramayana and said Ravan came in form of a golden deer to kidnap Mata Sita. "Kejriwal's credibility quotient is zero," Puri added.