Likud MK Oren Hazan on Monday fired the fire after calling the dead lawmaker Merlet Ilan Gilon "half a man."
Hazan said later that he was not talking about Gilon's inability.
The comment came during the stormy Knesset debate on legislation that would see government funding for art depending on "loyalty".
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Gilon criticized Culture Minister Miri Regev, also the Likud Party, from the podium when Hazan came to her defense.
Gilon and Hazan then exchanged words before Likud's assistant said, "If you were not half the people, I would answer you."
Gilon has rejected the branding of Hazan "Praškog Golema".
Likud MK, who was sentenced for the ridicule of the disability legislature in the past, insisted that his offense was not a blow to the left-wing law.
"My comments were about his behavior. If my statements were interpreted in another way, accept my apology," Hazan said.
Gilon, who had a child as a child, is hard to walk without help and often uses a wheelchair.
Hazan's comment was expelled from the opposition ICC, describing the words of the deputy as "rebellious" and "repulsive." "If you do not get out of Likud in the next hour, then it's the face of the party. That's how they want to lead Israel. Revolting," wrote Zionist trade union MK Stav Shaffir on Twitter.
"Let me remind you that this disgusting MK also laughed at his friend Karin Elhararu for his disability. How will you be disgusting?" Added the Zionist trade union MK Mickey Rosenthal.
Since his election to Knesset two years ago, Hazan publicly mocked a disabled colleague and was temporarily banned from Knesset twice because of various misconduct. In January, the Ethics Committee Knesset handed Hazan a maximum sentence – unprecedented throughout the Knesset years – for a series of incidents in which he insulted his fellow legislators.
In November 2015, during a vote late in the evening, Hazan yelled at Yesh Atid MK Karin Elharar, who was on a wheelchair, "Do you want Issawi to help you?" Elharar suffered from muscular dystrophy.
Hazan accused her of illegally double voting after asking Meretz MK Issawi Frej to help her put her voice in the plenum.
Recently, at the Knesset board, he told the women's representative that it was too ugly to be a prostitute.
Hazan's father, Yehiel Hazan, lost his Knesset seat after being caught for double voting in the plenum, and then trying to remove a voice computer from the Knesset warehouse to hide evidence of the act.
Knesset will vote on Monday night on the first reading of the controversial law to allow the minister of culture to deny funds to cultural organizations "working against the principle of the state."
The so-called Culture Loyalty Act will enable the government to withdraw funds from organizations or events that display any of the five topics: denial that the state of Israel is a Jewish, democratic country; inciting racism, violence or terror; support for armed struggle or terrorist attacks on Israel from an enemy state or a terrorist group; marking the Independence Day of Israel as a day of apprehension; or any act of destruction or physical degradation of the flag or any national symbol.