Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tirmidhi:3731al-Qāsim b. Dīnār al-Kūfī > Abū Nuʿaym > ʿAbd al-Salām b. Ḥarb > Yaḥyá b. Saʿīd > Saʿīd b. al-Musayyab > Saʿd b. Abū Waqqāṣ

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]."  

الترمذي:٣٧٣١حَدَّثَنَا الْقَاسِمُ بْنُ دِينَارٍ الْكُوفِيُّ قَالَ حَدَّثَنَا أَبُو نُعَيْمٍ عَنْ عَبْدِ السَّلاَمِ بْنِ حَرْبٍ عَنْ يَحْيَى بْنِ سَعِيدٍ عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ عَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ

أَنَّ النَّبِيَّ ﷺ قَالَ لِعَلِيٍّ أَنْتَ مِنِّي بِمَنْزِلَةِ هَارُونَ مِنْ مُوسَى إِلاَّ أَنَّهُ لاَ نَبِيَّ بَعْدِي هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَقَدْ رُوِيَ مِنْ غَيْرِ وَجْهٍ عَنْ سَعْدٍ عَنِ النَّبِيِّ ﷺ وَيُسْتَغْرَبُ هَذَا الْحَدِيثُ مِنْ حَدِيثِ يَحْيَى بْنِ سَعِيدٍ الأَنْصَارِيِّ