Great scholars of Ahlusunnah accepted, as mentioned by Hafiz Ibn Hajar and Hafiz Mubarakpuri

 قال أحمد وإسماعيل القاضيوالنسائي وأبو علي النيسابوري : لم يرد في حق أحد من الصحابة بالأسانيد الجياد أكثر مما جاء في علي

Ahmad bin Hanbal, Ismail Qadi, Nisai and Abu Ali Neshapuri said: None of the Sahaba have ahadeeth in their favour with Great Chains, like which came for Imam Ali asws

Reference:-

1- Fath ul Bari, Online link

2- Tohfa tul Ahuzi, Online link

 

You can see more references about this issue in this link

 

 

 

 

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