Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 32
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 32, with English translation by Maimonides (Rambam).
שלא לעונן, שנאמר "לא תעוננו" (ויקרא יט,כו).
Not to practice divination, as [Leviticus 19:26] states: "Do not practice divination."