Justice Siddharth Mridul extended Ajay's interim bail on health grounds.
Ajay, an Indian National Lok Dal (INLD) MLA from Dabwali constituency of Haryana, his 78-year-old father and chief of INLD and 53 others were awarded varying jail terms in the case.
Om Prakash Chautala is currently in Tihar jail after the high court and the Supreme Court refused to extend his interim bail.
Among other convicts, 44 have been sentenced to four years in jail and one was sentenced to five-year jail term.
All of them were held guilty of cheating, forgery, using fake documents as genuine, conspiracy under the IPC and for abusing their official position under the Prevention of Corruption Act.