الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِي وَرَضِيتُ لَكُمُ الْإِسْلَامَ دِينًا
“This day, I have perfected for you your religion and completed My favor upon you and have approved for you Islam as religion.”
Revealed to the Prophet ﷺ while he stood on the Plains of Arafah during this sermon.