According to the grammars of Arabic dialects illi only occurs following a definite head noun. However. based on fresh data from Brustad (2000). the relative marker illi is also found to occur following an indefinite head noun in Egyptian. https://www.ngetikin.com/bargain-MLB-Texas-Rangers-Alternate-Away-Jersey-iPhone-14-Pro-Clear-Case-p111023-save-big/