that the Prophet ﷺ said to 'Ali: "You are to me in the position that Harun was to Musa, except that there is no Prophet after me." (Using translation from Tirmidhī 3730)
أَنَّ النَّبِيَّ ﷺ قَالَ لِعَلِيٍّ أَنْتَ مِنِّي بِمَنْزِلَةِ هَارُونَ مِنْ مُوسَى قِيلَ لِسُفْيَانَ غَيْرَ أَنْ لَا نَبِيَّ بَعْدِي قَالَ قَالَ نَعَمْ