Justice Manmohan further said the chief minister should conduct cross-examination of the senior BJP leader in a dignified manner and in accordance with law.
It said dignity has to be maintained as no person can be subjected to scandalous and abusive language in the garb of cross-examination.
The court, however, refrained from passing any order against Kejriwal after noting his earlier submission that he had not instructed senior advocate Ram Jethmalani to use any objectionable remarks against Jaitley.
In the defamation case, besides Kejriwal, the five other accused are AAP leaders Raghav Chadha, Kumar Vishwas, Ashutosh, Sanjay Singh and Deepak Bajpai.
They had accused the BJP leader of corruption as the President of the DDCA, a post he had held from 2000 to 2013.
Jaitley, who had denied all the allegations levelled by the AAP leaders in December 2015, had claimed that they had made "false and defamatory" statements in the case involving DDCA, thereby harming his reputation.
Disclaimer: No Business Standard Journalist was involved in creation of this content