What is the authenticity of the mentioned hadith about the saying, "There is no sword but Dhu al-Fiqar, and no young man but Ali," and the story of its revelation connected to the fighting of Ali ibn Abi Talib and Gabriel's support for him?

This hadith is not authentic because its chain of transmission includes some fabricators and liars. Ibn Hajar stated in "Lisan al-Mizan" that Isa ibn Mihran was "a Rafidi, a liar, a fabricator," and that he narrated fabricated hadiths. As-Suyuti also mentioned in "Al-La'ali al-Masnu'ah fi al-Ahadith al-Mawdu'ah" that Ubayd, a Rafidi, narrated fabricated reports. Ibn al-Jawzi said in "Al-Mawdu'at" concerning this hadith that it is not authentic, and that Isa ibn Mihran is accused of fabricating it.