Likutei Moharan, Part II 26:2/ליקוטי מוהר"ן·תנינא כ״ו:ב׳

12. And know! drunkenness causes one to forget all the mitzvot and prohibitions commanded by Moshe Rabbeinu, of blessed memory. This is because Moshe is embodied in every single Jew, in each and every limb. He reminds each limb to fulfill the mitzvah particular to it.

2For the 248 mitzvot correspond to the 248 limbs. This is the reason Moshe is called M’ChoKeK (lawgiver) (Deuteronomy 33:21), which has a numerical value of 248, for he reminds about the 248 mitzvot. But drunkenness causes one to forget them, as in “lest he drink and forget M’ChuKaK (what has been ordained)” (Proverbs 31:5). Drinking and drunkenness cause one to forget the 248 mitzvot of Moshe.

3And Moshe’s embodiment in the limbs is the very same concept as the garbing of daat in the chasadim, as mentioned above. This is because Moshe is daat, and the limbs are 248, corresponding to “Avraham is a man of chesed (lovingkindness),” whose numerical value is equal to the 248 limbs.