Classification: Sahih (Authentic)

This Hadith has multiple narrations in Ahmad, Mustadrak Hakim, Tabarani, Ibn Maja, Tirmidhi and many other reliable Hadith collections

النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ كُنْتُ مَوْلَاهُ فَعَلِيٌّ مَوْلَاهُ» هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ

The Prophet ﷺ said, ‘If I am a person’s Mowla, then Ali is also his Mowla.’ (Sunan al-Tirmidhi 3713, Imam Tirmidhi said it is Hasan).

Imam Ibn Hajr al-Asqalani mentioned that a number of the narrations are Sahih and Hasan:

وَأَمَّا حَدِيثُ مَنْ كُنْتُ مَوْلَاهُ فَعَلِيٌّ مَوْلَاهُ فَقَدْ أَخْرَجَهُ التِّرْمِذِيُّ وَالنَّسَائِيُّ وَهُوَ كَثِيرُ الطُّرُقِ جِدًّا وَقد استوعبها بن عُقْدَةَ فِي كِتَابٍ مُفْرَدٍ وَكَثِيرٌ مِنْ أَسَانِيدِهَا صِحَاحٌ وَحِسَانٌ

As for the Hadith, ‘Whoever’s Mowla I am, then Ali is his Mowla.’ It was narrated by al-Tirmidhi and al-Nasai, and it has a great abundance of chains of narration, Ibn Uqdah gathered them in a single book. Many of the chains of narration are Sahih and Hassan. (Fath al Bari).

And Allah (Most High) knows best.

– Answered by Shaykh Noorud-deen (06.01.2021)

See also:

What does the Hadith Ali is our Mowla mean?