Raed Salah, head of the outlawed northern branch of the Islamic Movement in Israel, stopped in the Al-Aqsa mosque in Jerusalem amid the ongoing Arab violence on the Temple Mount.
He arrived with other Israeli Arab leaders on Tuesday morning.
Salah was released from jail in December after serving time for incitement to terrorism. He served 17 months of a 28-month sentence.
Knesset member Itamar Ben-Gvir blasted the Israel Police for letting Salah visit the Temple Mount while refusing to allow a right-wing march to take place in the Old City.
The Islamic Movement in Israel was founded in 1971. Its northern branch has been outlawed by the Israeli authorities since 2015.