The disciplinary procedure against Julius Malema and 19 other EFF MPs is expected to continue in Parliament on Wednesday.
He told the powers and privileges committee: “Whatever the outcome of this process, the EFF will not be participating”.
He said it was an unconstitutional exercise, bound to be biased against the EFF because the committee was dominated by ANC MPs.
Malema said it would be “career-limiting” for them to contradict Speaker Baleka Mbete’s wish to suspend the EFF members from Parliament.
The EFF contends that Mbete had mishandled events on August 21 when the EFF shouted “pay back the money” at Zuma during presidential question time in the National Assembly.
Mbete ordered “members who are not serious” to leave the chamber after EFF MPs repeatedly pointed out that Zuma had failed to answer a question on when he would heed Public Protector Thuli Madonsela’s directive to repay some of the R246 million in state funds spent on his home.
She then threatened to have them removed before adjourning proceedings.
At the start of the hearing, EFF MPs refused to plead to charges of disrupting and showing contempt for Parliament.
The EFF MPs risk suspension from the legislature for up to 14 working days if found guilty.