Likutei Moharan 34:6/ליקוטי מוהר"ן ל״ד:ו׳

16. Now, the aspect of m’loopum exists in the general and in the particular. The Ten Commandments <are> a yod, and the Tablets are a vav, as our Sages taught: The Tablets were six handbreadths long by six handbreadths wide (Bava Batra 14a). <And yod vav form a m’loopum.> The Torah and the world are also <an aspect of m’loopum>. The Torah is yod, because it is called “the beginning of wisdom” (Psalms 111:10), and the world is vav, because it was created during the Six Days of Creation.

2The tzaddik and Israel are also <an aspect of m ’loopum>. The tzaddik is yod, because the tzaddikim are called “the wise men of the congregation,” and Israel corresponds to the vav, because they are “supporters of Torah” and are called “vavey (hooks) for the pillars” (Exodus 27:10).

3{“My mouth utters wisdom, and the meditations of my heart are understanding” (Psalms 49:4).} And each Jew himself is also an aspect of < m’loopum>. Yod, on account of the mouth, as is written, “My mouth utters wisdom.” Vav, on account of <the heart, as in,> “and the meditations of my heart are understanding”—this being an aspect of the Tablets, which, as explained, are a vav, as it is written (Proverbs 3:3), “Bind them around your throat, write them on the tablet of your heart.”