Explanation of the Fact that Allah Spoke to Moses from Behind a Veil: (Kitab al-Tawhid by Abu Bakr b. Khuzaymah)

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Allāh Almighty spoke to Moses from behind a drapery. There was no messenger between Allāh Almighty and Moses. Moses did not see his Lord during the dialogue.

205. (1) Aḥmad b. ᶜAbd al-Raḥmān b. Wahb → his uncle → Hishām b. Saᶜd → Zayd b. Aslam → his father → ᶜUmar b. Khaṭṭāb → the Prophet:

Moses said: “O Lord! Show me Adam who got us and himself out of Paradise.” Allāh showed him Adam. He said: “O Adam! You are our father.” Adam said: “Yes.” He said: “You are the one in whom Allāh blew His spirit and whom He taught the names of everything? He ordered the angel to prostrate before you and they did?” He said: “Yes”. He said: “Then what made you get us and yourself out of Paradise?” Adam said: “Who are you?” He said: “I am Moses.” He said: “Are you the Prophet sent to the children of Israel, to whom Allāh spoke from behind the drapery, without a messenger from His creatures between you and Him?” He said: “Yes.” He said: “Have you not found in the Book of Allāh that it was ordained and recorded in the Book of (decrees) with Allāh even before the creation of Adam?” He said: “Yes.” He (Adam) said: “Then why do you blame me of something that was predestined?” Then at this point the Prophet said: “Moses and Adam argued on.”