were you present at the time when jacob was on the point of death? he asked his children whom will you worship after me? they all answered we will worship the same one allah whom you your forefathers abraham. ismail and isaac acknowledged as their allah and to him we all surrender as muslims.
أم كنتم شهداء إذ حضر يعقوب الموت إذ قال لبنيه ما تعبدون من بعدي قالوا نعبد إلهك وإله آبائك إبراهيم وإسماعيل وإسحاق إلها واحدا ونحن له مسلمون