Deuteronomy 9:10–11
10 And lthe Lord gave me the two tablets of stone written with the finger of God, and on them were all the words that the Lord had spoken with you on the mountain out of the midst of the fire mon the day of the assembly. 11 And at the end of forty days and forty nights the Lord gave me the two tablets of stone, the tablets of the covenant.
Exodus 24:12
12 The Lord said to Moses, i“Come up to me on the mountain and wait there, that I may give you the jtablets of stone, with the law and the commandment, which I have written for their instruction.”