Parashas Ki Sisa · Passuk 34:29
Torah Temimah points to classical source on this unit (verified).
English: “The skin of his face shone” — rays of glory.
Derash on the shining of Moshe’s face after the second tablets.
When Moshe came down from Mount Sinai with the two tablets of the testimony in his hand, Moshe did not know that the skin of his face shone because he had spoken with Him.