Ibn Rajab said: "It was narrated by Al-Nasai in Khasa'is 'Ali."
Al-Dhahabi said in Al-Mizan: "This appears to be a fabrication attributed to 'Ali."
In Al-Zawa'id, it is stated: "I say: This is a sound chain of transmission; its narrators are trustworthy. It was narrated by Al-Hakim in Al-Mustadrak from Al-Minhāl, and he said: 'It is authentic according to the criteria of Al-Bukhari and Muslim.' The first statement is found in Jami' al-Tirmidhi in the hadith of Ibn 'Umar as a marfu' (elevated) narration: 'You are my brother in this world and the hereafter.' Tirmidhi said: 'It is a hasan gharib (good and uncommon) hadith.' End of quote."
I say: "Thus, anyone who judged it as fabricated has ruled so due to their inability to discern its meaning, not because of any defect in its chain of transmission. Its meaning becomes evident based on what we have mentioned.
Alkarbala