To what extent is the story of Imam Hamza al-Kufi's dream, when he spoke with Allah Almighty, authentic, and should it be relied upon in inviting people to the Qur'an, and what is the scholars' commentary on it?

This story was mentioned by Al-Mizzi in "Tahdhib al-Kamal" and by Ibn al-Jawzi in "Sifat al-Safwah." Al-Dhahabi challenged its chain of narration (sanad) due to Muhammad ibn Nasr al-Samiri, and Ibn Hajar followed him in this. Al-Dhahabi clarified that Muhammad did not live to see Dawud, and Dawud did not meet Mujja'ah, so the dream is not substantiated. Seeing Allah the Almighty in a dream is permissible, and many texts have been reported that are sufficient, without this dream, regarding the virtue of the Qur'an and teaching it, such as the hadith: "The best of you is he who learns the Qur'an and teaches it."