مَا كَانَ إِبْرَاهِيمُ يَهُودِيًّا وَلَا نَصْرَانِيًّا وَلَكِن كَانَ حَنِيفًا مُّسْلِمًا وَمَا كَانَ مِنَ الْمُشْرِكِينَ
Abraham was neither a Jew nor a Christian. Rather, he was a Hanif, a Muslim, and he was not one of the polytheists.
Agha Ali Puya Commentary
Commentary on Quran 3:67
[Pooya/Ali Commentary 3:67] (see commentary for verse 65)