Exodus 34:26-28 Modern English Version (MEV)
26 The first of the first fruits of your land you must bring to the house of the Lord your God.
You must not boil a young goat in its mother’s milk.
27 Then the Lord said to Moses: Write down these words, for in accordance with these words I have made a covenant with you and with Israel. 28 So he was there with the Lord forty days and forty nights. He did not eat bread or drink water. And He wrote on the tablets the words of the covenant, the Ten Commandments.