"If someone were to pronounce the two shahadas without understanding its (correct) meaning, and he performed acts of worship like salah, fasting, and hajj merely because they observed others doing so, and (he) refrained from any act of shirk, there would be no doubt about the absence of his Islam. So, what about those who worship graves? Those who are ignorant of its meaning AND engage in actions that contradict the shahada? Their kufr is more severe due to their belief in multiple deities"
📚: الفروق بين العقيدة السلف وعقيدة المرجئة
Difference between the Aqīdah of Salaf and the Aqīdah of the Murji'ah by Saleh al-Suwaih, evaluated & forwarded by Sheikh Salih al Fawzān pg 127