Shahada in Quran: La ilaha illa Allah

The Shahada ( الشَّهَادَة) is the proclamation that every human is required to make and uphold to be redeemed back to God’s kingdom.

7:172 Recall that your Lord summoned all the descendants of Adam, and had them bear witness for themselves: “Am I not your Lord?” They all said, “Yes. We bear witness.” Thus, you cannot say on the Day of Resurrection, “We were not aware of this.”

وَإِذْ أَخَذَ رَبُّكَ مِنۢ بَنِىٓ ءَادَمَ مِن ظُهُورِهِمْ ذُرِّيَّتَهُمْ وَأَشْهَدَهُمْ عَلَىٰٓ أَنفُسِهِمْ أَلَسْتُ بِرَبِّكُمْ قَالُوا۟ بَلَىٰ شَهِدْنَآ أَن تَقُولُوا۟ يَوْمَ ٱلْقِيَـٰمَةِ إِنَّا كُنَّا عَنْ هَـٰذَا غَـٰفِلِينَ

The Quran informs us that the Shahada of God, the angels, and the knowledgeable is simply that there is no god except God:

3:18 GOD bears witness that there is no god except He, and so do the angels and those who possess knowledge. Truthfully and equitably, He is the absolute god; there is no god but He, the Almighty, Most Wise.