Deuteronomy 9:9-11

9When I was gone up into the mount to receive the tables of stone, even the tables of the covenant which Yhwh made with you, then I abode in the mount forty days and forty nights, I neither did eat bread nor drink water:

10And Yhwh delivered unto me two tables of stone written with the finger of God; and on them was written according to all the words, which Yhwh spake with you in the mount out of the midst of the fire in the day of the assembly.

11And it came to pass at the end of forty days and forty nights, that Yhwh gave me the two tables of stone, even the tables of the covenant.