Israeli law currently prevents Jews from praying on Temple Mount. However, the Jerusalem Magistrate’s court has ruled that it is permitted for visitors to the Temple Mount compound to call out, “Am Yisrael chai” (“The people of Israel live”), because it is a patriotic slogan rather than a prayer.
https://www.timesofisrael.com/court-rules-israelis-on-temple-mount-may-call-out-am-yisrael-chai/