Ali 'Imran 3:67
مَا كَانَ إِبْرَٰهِيمُ يَهُودِيًّا وَلَا نَصْرَانِيًّا وَلَـٰكِن كَانَ حَنِيفًا مُّسْلِمًا وَمَا كَانَ مِنَ ٱلْمُشْرِكِينَ
Ma kana ibraheemuyahoodiyyan wala nasraniyyan walakinkana haneefan musliman wama kana minaalmushrikeen
"Abraham was neither a Jew nor a Christian, but he was one inclining toward truth, a Muslim [submitting to Allāh]. And he was not of the polytheists."
Ali 'Imran 3:67, translation by Sahih International
A short reflection
Ibrahim was not a Jew nor a Christian, but he was upright, a Muslim, and not of the polytheists.