Understanding the words of Maimonides

All the commandments given to Moses at Sinai – in their interpretation were given, as it is said (Exodus 24:12): “And I will give you the tablets of stone and the Torah and the commandment” – “Torah” is the written Torah, and “mitzvah” is its interpretation, and it was commanded to do the Torah according to the mitzvah. This mitzvah is what is called the “Oral Torah.”

What is Maimonides’ intention?
This seemingly contradicts what you said, and Maimonides also believes that at Mount Sinai, only a few laws were given to Moses from Sinai and the precepts he taught. If so, what is the correct understanding of his words?